Guide for Adventure Time: Finn and Jake Investigations (2023)

CASE 1: Sweet Sweet Magic

A few things: If I say ‘interact’, ‘get’, ‘activate’, or ‘talk to’, this is using with the object/person in question. If I say ‘use XXX item or Jake’, use or to cycle through your active items until you reach the one I’m telling you to use. It is context sensitive, and controller prompts will come up on screen. You will typically hit to use the item in question. If I say ‘examine’, I mean to use to look at something. If I say ‘combine X and Y’, open up the items menu with the back button, hit on each item to select both, then to combine them.

Secondly, this guide assumes that you will knock out the achievements for getting a 15-hit combo and using all four 'outfits', aka special abilities on the D-pad once you have a combo going, during the first fight or somewhere along the way. To get them out of the way, the first time you get into a fight just build up a 15-hit combo for Combo Time. Each time you build up a combo until the hands do a bro-fist bump at the bottom of the screen and it says 'Ability Time', use a different direction on the D-pad (). Once you've used all four you'll get Stretch Goals.

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Combo Time
Perform a 15-hit combo in combat without being hit.
1 guide

Stretch Goals
Use all four Jake combat forms at least once in the game.
1 guide

Starting out, we’re first going to work on the Radio Starchie achievement. You need to listen to all 15 broadcasts on the radio upstairs, three in each case. I’ll be reminding you at the beginning of each case to do this. Interact with the ladder on the tree to the left and go UP. Activate the radio on the dresser above the bed three times (Radio Starchie #1-3/15). Go back down to the living room and activate the tickertype to start the case.

Candy Kingdom: Use Jake to interact with the right side of the bridge (where the hole is) to go down into the moat. Go right, switch to the sword item, and interact with the broken pipe on the right. Look by the white fence around you for a Snail #1/15 and examine it. After getting all 15 of these, you’ll unlock Snail’s Pace near the end of the game. Go up the stairs and into the castle, and into the middle door to the security room. Talk to Princess Bubblegum and go through all dialogue options, then exit the room and go into the door to your immediate left.

In this room, first interact with the pink leaf to get items: leaf and business card. Examine the Jelly Beans. Talk to the large character looking through the window. Talk to Starchie and go through all dialogue options. Interact with the ‘Circle Thingy’ beside the bed, on the floor. Talk to the Banana Guard. Exit the room and go back to Security (where Princess Bubblegum was). Talk to her again and choose ‘We have all the evidence’. Select the answers in the following order: Pamphlet, Jellybeans, Abracadaniel. Exit the room and enter the next door to your right, the Prison.

Talk to the Banana Guard. Switch your item to Jake and interact with the keys to get them. Use the keys to interact with the lock and open the cell. Exit the room, then exit the castle and go up the road toward houses and a tree with a beehive. Use Jake to interact with the beehive, then use him again to interact with the roof and climb up. Use the beehive to interact with the chimney, which will cause a character to run out of the house. Go back down and enter the house. Interact with the note on the table and the book of matches on the counter. Exit the house, go back into the castle, and enter the final door down the hall to the far right.

Interact with the box of soap, the candles on the cake, and the plastic bottle. Use the plastic bottle to interact with the sink to get a bottle of water. Combine the bottle of water and the soap, then combine the resulting soapy water with the circle thingy (which you may have realized is a bubble blowing wand) to get bubbles. Use the business card on the Banana Guard to the left to be allowed to exit, and go out onto the balcony. Examine the leaves, then use the bubbles on the leaves. Exit back through the kitchen and go to the room to the left of security, the one with Peppermint Butler in it.

Interact with the bookshelf using the candles, then the candles using the matches to open a secret room and go inside. Interact with the cake plate. Exit the secret room and go back to the prison room. Interact with Abracadaniel with the cake plate, then use the portal after the short scene.

Cake Plate Quest
Free Abracadaniel from jail.
1 guide

Wizard City: You’ll be outside Wizard City now. First, interact with the Wand nearby, then combine it with Jake. Use the Jake/Wand combo to interact with the crank by the gate and enter. Use the cake plate with the guard. Go left and interact with the mop, then down a little and get the green slime also. Exit the area to the upper-right to get to the Alley. Get the rope and go back to the first area, then leave to the bottom-right.

Use the rope you just got to interact with the post on the right and pull a boulder down. Grab the nearby brick and return to the main area, then top-right to the alley. Interact with the wall to the right of the gnome using Jake, then again to the left to get on the roof above him. Use the brick to interact with the gnome. Grab the paint he drops and exit. Combine the paint and mop, then combine the resulting beard with the slime. Talk to the Rock Wizard and give him the beard to receive a gold coin. Interact with the vending machine using the coin to get a crowbar. Exit to the bottom-right again, back to the area you pulled down the boulder. Interact with the boulder using the crowbar to get a gem, and exit back the way you came.

Talk to the guard outside the shop waiting in line, then give him the gem. He’ll give you a cracked gem, which you need to combine with the mop handle to get a staff. Talk to Flambo about him needing to pee and you’ll get a coin. Use this on the vending machine to get the magic brush. Go to the upper-left area where you found the mop a while ago. Stick the staff (mop handle + cracked gem) into the hole in the ground, and interact with the right pole using the magic brush. A white door will appear on the wall.

Go back and talk to Flambo and he’ll leave, allowing you to enter Ron James. Just inside, look to the left of the door for Snail #2/15. Grab Gunter to the right and exit. Use one of the wizard coins (IIRC you only have one left) on the phone booth ten times to get Wrong Number. Make sure you do this here, as if you get the pizza delivery number later and use it on the phone, you will no longer be able to get this.

Wrong Number
Dial 10 wrong numbers on the pay phone.
1 guide

Exit to the bottom right. Interact with the bottle on the left wooden platform using Gunter. He’ll break the bottle, so grab the broken bottle bottom. Return the way you came, and exit to the top-right to the alley. Grab the broken bottle top off the ground. Return the way you came and enter Ron James’ again. Talk to the Ice King, then Ron James. Give Ron the bottle to get another coin. Exit.

You should now see a new character here to the right, the Huntress Wizard. Talk to her, then go over to the message board and grab the pizza number. ****If you didn’t get Wrong Number earlier, do it now, otherwise you will miss it and have to start the game over.**** Interact with the phone booth using the pizza number. Grab the hooked staff. You’ll have a single pizza and a stack of pizzas in your inventory now. Interact using the single one with Huntress Wizard. Interact with the vending machine using the wizard coin. A soda will get stuck, so use the hooked staff to retrieve it. By now you should have the pizza stack, chips, and soda in your inventory. Go into Ron James again and give all three to the Ice King.

Wizards Only, Fools
Find a way to get into the wizard "party."
1 guide

Grab the rod out of the umbrella stand to the right. Interact with the oil lamps on the ceiling using the rod. You should now have a torch, so use that on the fireplace to the left to light it, then use the lit torch on the candles in the bookcase. Enter the new door. Inside, grab the manhole cover and enter it. Get the wrench from the chest, then exit twice to return to Ron James’. Use the wrench on the valve wheel to the right to get the wheel, then go back into the secret door and down the manhole.

Inspect Snail #3/15 to your right, then use the valve wheel to interact with the pipe, then use the wrench on the valve wheel to tighten it. Interact with it to open the grate and enter it. Talk to the Candy people and go through all the dialogue options. You’ll get a key. Exit to the left. Get the rusty hook and return all the way to the right. Interact with the open manhole on the far right using the manhole cover. Now combine Jake with the rusty hook you just got, and use them to pull the chain. Use this new exit. Head to the right and interact with the ropes using your sword, then open the wand case with the key you just got. Use the Abracadaniel wand in your inventory with the wand case to end the chapter and unlock Sweet Sweet Magic.

Sweet, Sweet Magic
Defeat the wizards and free the kidnapped Candy People.
1 guide

CASE 2: Lumpy Ice Princess

From the start, go left and interact with the ladder to go up to your room again and interact with the radio three times (Radio Starchie #4-6/15). Go back down and activate the tickertype to start the case. You’ll start out at Tree Trunk the elephant’s house. Interact with the apple using Jake, then grab a white flower from the flower pot beside the house, the axe nearby, the wood planks, and the doormat. Interact with the door, and Tree Trunk will tell you to go away, so heed her command and leave the area to the right.

In this area you’ll see a Tree Stump character at the bend in the road. You can’t do anything here, so leave to the upper-left to get to the bridge. Use Jake to interact with the right post on the bridge using the axe, then interact with the sparkles on the left side to get a key. Go back to the house and use the key to break and enter. Tree Trunk is surprisingly nonplussed by your uninvited entry, so talk to her and go through all the dialogue options, then return to the Tree Stump character at the bend in the road.

Interact with ol’ stumpy to get a flower, then exit to the right. After you deal with the fight here, interact with the apple on the right using Jake, then go up to the train to hop on, which will take you to a new area and another wizard, Forest Wizard. Go through all his dialogue options, then return once more to Tree Trunk’s home. Combine the two flowers, then combine the result with the medicinal herbs to make tea. Use the tea to interact with the teapot, which will make Tree Trunks so happy she’ll offer to make you a pie. Give her the apples you’ve collected to receive your pie, then pick up the towel on the floor before you leave.

Return to the Tree Stump character and give her the pie to make her a cannibal, then grab the hammer and exit left back to the bridge. Interact with the bridge using the wood, then interact again using the hammer. Cross the newly-repaired bridge to reach Ice King’s area. Before you do anything here, inspect the Snail #4/15 on the washing machine, then use the hammer to interact with the motorcycle to get handlebars from it. Grab the bean can nearby, then use it to interact with the well to get a can of water. Put this on the campfire, then interact with it using the towel. Use the handlebars to grab the hot towel and place it on the ice block surrounding the King. Go through all of his dialogue options to unlock Hairy Beast.

Hairy Beast
Find the hairy beast that has been wreaking havoc.
1 guide

You’ll wind up at home again, only with the Ice King as your guest. Go through all his dialogue again. Now go to the exit at the top (not the ladder to the left) to get to the roof. Grab the white paint. Interact with the telescope, and switch its view a couple of times so that you see the three different kingdoms and unlock I See You.

I See You
Use the telescope in the boat to look at three different kingdoms.
2 guides

Go back inside and through the door on the right. Pick up the paint brush. Return to the main area and go up to your room. If you missed the three Radio Starchie interactions for this case, do that now before you forget again. Grab the mix tape while you’re here and go back to the main area, then down again using the same ladder to reach the kitchen. Enter the door closest to you in the kitchen and grab the gold foil card, then exit. Interact with the freezer (large box on the floor with what looks like green ooze coming out) to get the meatballs. Grab the glue to the left of the freezer. Exit to the right to the treasure room, then out the next door to go outside. Grab the black paint and return to the kitchen. Go to the far-left door and enter it to reach the bathroom. There’s nothing here for now, but you’ll unlock Home Sweet Home for stopping by.

Home Sweet Home
Visit every area in and around the tree house.
2 guides

Return to the kitchen and go through all of BMO’s dialogue options. BMO is the character that looks like a Gameboy. Give BMO the tape. Combine the following: glue + gold foil card, black pain + brush, white paint + brush. Then use all three of those as well as the meatballs with BMO to create your ‘penguin’ for the King. You’ll be transported to Candy Kingdom after a short scene. Go through all of Peppermint Butler’s dialogue option. Get the shield to the left above the door, then exit the door.

Go through all the dialogue options with Dr. Donut and he’ll move. Enter the door behind him. In here grab the spatula at the sink and the note off the fridge, then exit. Grab the spray can nearby on the floor. Interact with the partially-destroyed wall to the left using the spatula, then leave via the far top-left door. Out here, you’ll find a birthday party. Right near the door, you’ll see Nurse Poundcake. Give her the note from the fridge and go down the stairs. Examine Snail #5/15 on the table near the stairs, then go through all the dialogue options with marshmallow Kid and Cinnamon Bun. Grab the candy-cane rocket near the fountain, then leave via the top exit. Interact with the trash can in this area to get the feather. Go through all of Cookie Man’s dialogue options, then interact with the new female character to the right to unlock New to Ooo and exit the way you came.

New to Ooo
Say hello to the new character in Ooo.
2 guides

Fill up your spray can at the punch bowl and go back to the Cookie Man. Pick up the rope he drops for you and combine it with the rocket. Go to the fire on the right and use it to light the rocket, then interact with the trap door on the far upper-right using the rocket to open it and enter. Interact with fire wolf using the handlebars to get him to follow you and go all the way back to the birthday party to automatically return him to his owner. Use the shield on the empty space on the right-side table, then use the cake on the shield (from the spatula on the wall earlier). Interact with Mr. Creampuff using the feather to get frosting and put that on the cake, then add the gem to it to finish the masterpiece and unlock Lump Support.

Lump Support
Fix all of the noble deeds that were done incorrectly.
1 guide

Go through all the dialogue with Lumpy Space Princess, then go left and interact with the recliner and get the pizza once it opens. Try to cross the bridge at the top of the ramp on the left, then interact with the platform at the bottom using Jake to ballast it, allowing you to cross the bridge above. Talk to the penguin to get the cell phone, then go all the way to the right side of the area. Grab the spray bottle near the weightlifting area and exit through the door on the top right (the only one that’s open, that looks like a closet).

This leads to the Kitchen. Interact with the red button on the left. Gunter will take the bottle, so spray him with the spray bottle. Grab the scepter off the ground, press the button again, and pick up the bottle. Interact with the rose on the table to the right with the bottle, and take the diamond ring (some proposal!). Return the way you came in.

Interact with the door on the right using the diamond to cut it open and enter. Get the two scrolls from the two display cases (Force of Blizzard and Stars of Frozen Rain). Also pick up the gauntlet, and combine it with Jake. Return the way you came in. Interact with the underwear by the bed using Jake (gross!), and combine it with the handlebars. Exit to the right again (to the area that had the scrolls). Go down two sets of stairs and interact with the crack in the floor using the handlebars-underwear combo, then interact with the resulting slingshot using the pizza. Exit the way you came in.

Give the key and phone to Lumpy Space princess and exit to the right again. Go down the two flights of stairs, and take the right-side exit to the first of two puzzle rooms. In this first one, use the blizzard scroll to make a bridge. Cross it, and use blizzard again on the block to the left. Use the stars scroll on the block at the bottom to drop it, then use blizzard on it to finish filling in the hole and cross over it to the right.

For the middle area, use blizzard on everything until you reach the spot with four ice blocks. The top two are on the ground and the bottom two are on platforms. Use the stars scroll followed by the blizzard one on the left platform block to push it up between the two upper blocks. A new scroll spot will appear on it. Use stars on the 2^nd plaform block, then use blizzard to push it UP. It has three scroll spots around it once it falls, so use the bottom one to push it up. Go between the two upper blocks on the new scroll spot that appeared on the ice block you pushed up. Face to the right, and use blizzard to push the upper-right block to the right. Finally, use blizzard from the left to push the upper-left block all the way across the other three to finish the path and cross it.

Interact with the counterweight switch on the ground using Jake, then interact with the gap/counterweight that moves up using the scepter to wedge it in. Go through the door that is held open and grab the scepter before leaving, then exit to the right. After a short scene, BE CAREFUL NOT TO GO UP THE STAIRS. Before you do anything here, inspect Snail #6/15 to the left, near the books at the bottom of the stairs. Don’t move onto the stairs until you get him or you’ll have to replay the entire game. Going up the stairs will end the case and unlock Long Live The King.

Long Live The (Ice) King
Put the king back in charge of his kingdom.
1 guide

CASE 3: Sour Notes

As usual, at the start of the case go to your room and interact with the radio three times (Radio Starchie #7-9/15), then return to tickertype and activate it. Once you can move, exit to the right. Grab the psychic crystals and return to the living room, then exit to the far left and choose down to go to the kitchen. Open the freezer and grab the squid tentacles, then grab the hot sauce to the left and the pot off the stovetop. Enter the bathroom to the left. Grab the vinegar and fill the pot with water in the sink. Return to the stove.

Interact with the stove using the pot of water, then add the vinegar, tentacles, psychic crystals, and hot sauce to it to create earplugs. Any time you need to talk to a character during this case, you’ll have to give them these earplugs, go through all the dialogue options, then take them back. You’ll wind up in front of a house with Marceline to the left and Princess Bubblegum to the right. Use the earplugs with each of them to go through all dialogue options, then leave via the upper-right exit.

Go through all of Magic Man’s dialogue. Interact with the nearby well to get a hammer, then with the truck to get a steering wheel, and leave to the upper-left. Interact with the plant to the right to get witch hazel, then interact with the broken wood using the hammer. Interact with the pole on the right using the steering wheel, then interact with the wheel crank and leave the way you came after the short scene. Talk to the little guy that crash landed, then grab the jar from the wreckage. You can now enter the mine shaft to the left; do so.

In here, just grab the sunflower at the bottom and exit. Look for a small dirt pile toward the bottom, to the left of the smashed mine card. Interact with it using the sun flower to distract the bees, then interact with their hive to get honey. Return to the mine shaft to the left. Put the honey on the anthill and exit to the left (you entered from the right). Go through all the dialogue with the forest wizard. Interact with the potion apparatus on his table using the witch hazel, then use the jar to collect some. Give the jar to the candy person that’s trapped in the poison ivy and take the left exit. Before you do anything here, inspect Snail #7/15 by the front end of the green car. Go to the left to trigger a scene, then go through all of Lemongrab’s dialogue to unlock Dance OFF.

Dance OFF
Find a cure for the dancing epidemic.
1 guide

You’ll now be at Flame Princess’ area. Go through all of her dialogue, then go left and grab the fence posts on the ground. Finish her fence by using the posts, then hammering them in place using Jake. Go through all of the Princess’ dialogue again. Go to the left and get the first plastic bag, then up the ramp to get the 2^nd. Also grab the speaker up here. Go down the wooden stairs nearby and interact with the floating buoy using Jake, then grab the final plastic back. Combine Jake with a plastic bag three times, then go back to the Princess and talk to her. Use the exit she opens to the bottom-right to start the fight with Incendo. Interact with all three tires using the stink bombs to place them.

For the fight, kill the first few enemies, then just stand near one of the three plastic bags until the Princess damages him with it, then repeat that two more times to finish. Easy! Return to the Princess’ main area and talk to her again to initiate the fight with Combuster. Use the middle exit she opens to enter his area. First go through all the Ice King’s dialogue, then hammer fence posts into each of the three cracks in the area by placing the post, then using Jake to hammer them just like before. Once all three are in place, talk to the King to start the fight. Just like the stink bombs, stand by the three ice pillars to damage him. Just stand behind them so he rams into them. Return to the Princess and talk to her again to start open the final fighting area.

In this area, talk to Lumpy Space Princess until she stops talking. IMPORTANT: GET THIS SNAIL BEFORE MOVING THE SPEAKER OR YOU’LL MISS IT. Look for Snail #8/15 at the bottom-right corner of the stage. Now, interact with the loudspeaker using the speaker in your inventory to repair it, then turn it twice by using the sword on it to start the fight. Leroy (the boss) only has three locations he shoots from. The speaker only has three locations it can ‘turn’ to, as well. You can rotate the speaker to his next location (he always goes in order), then run back behind the microphone to reflect his shot at him once he moves. Or, you can just stand behind the Microphone and wait. Sooner or later he’ll move to the spot the speaker is facing and damage himself. I chose the former, because it’s very easy to move the speaker before he moves each time, and much faster than waiting. After he is damaged three times you’ll unlock Sound Sword Quest and the scene will change.

Sound Sword Quest
Find the missing Sound Sword.
1 guide

You’ll be in Lemongrab’s dungeon now. Grab the shock collar from the skeleton at the top, and pick up the marker left of him. Interact with the hole at the bottom-right using Jake to get a file. Interact with the door using the file to get the filed prison bar and open the way to your escape. Before leaving, inspect Snail #9/15 on the barrel to the top, then exit. Grab the rope sticking out of the wall, then go into the door on the left, which is Lemonsweets’ room (Lemongrab’s ‘baby’).

Grab the doll bonnets off the shelf. Interact with the note on the table, then use the marker and interact with it again to write a fake note. Grab Lemonsweets out of the box on the table. Combine the rope and doll bonnets, and use the resulting rope on the radiator. Interact with Lemongrab and he’ll think his baby has run away, oh no!

In the hall, go to the door on the right (not the far right, the upper-right) and grab the remote from the mitt. Return to the hall and interact with the machine. Finn will take one for the team, so once the far right door opens, enter it. Interact with the fountain using the jar, then return to the previous room where you got the remote. Interact with the mitt that had the remote before using Lemonsweets to place him in it, then interact with it again using the filed prison bar. Finally, interact with the curtain. When Lemongrab enters, interact with him using the Jar. A short scene will play out and you’ll be trapped behind a force field. Use Jake to interact with the vent, then interact with the console using the sword. This ends the case and unlocks Acceptable Ending.

Acceptable Ending
Defeat Magic Man's latest jerky plan.
1 guide

CASE 4: Everything Must Go

Once again, go up to your room and use the radio three times (Radio Starchie #10-12/15). Go down and activate the tickertype. Once the scene ends, grab the hot sauce off the table and exit stage left. From the next screen, enter the door on the right. Grab the liver and onions from the empty cell, and go through all of Flambo’s dialogue. Exit the way you came, then exit to the right from the next screen to reach the kitchen.

Get the knife to the right and use it on the cabbage, then grab the sliced cabbage and put it into the soup pot. Add the liver and onions, and the hot sauce. Once the pot is gone, grab the bone and exit to the left. Interact with the fire wolf using the bone. Return to the prison (where you got the liver and onions). Exit to the right from the prison and go up to the furnace. Interact with it using the bone to get a key, and use that to release Flambo. Return back to where you started this area and use the door on the left. You should be in a room with pressure switches on the floor.

Interact with one of them using Jake, then stand on the other one. Cross the new bridge and go up the slope. Interact with the machine to send Jake inside the room, then go down near him and have him sit on the switch in there. Hit the other switch that’s outside with you, and cross the next bridge that forms. Just after you cross this bridge, examine Snail #10/15. Climb up twice using Jake to reach Starchie and talk through all of his dialogue to unlock Wet Willie.

Wet Willie
Find out why the Fire Kingdom's flames are going out.
1 guide

You’ll be back outside and see Marceline nearby. Go through all of her dialogue. In the next area you’ll see a throne with some statues around it. Pick up the flat rock to the left then exit to the right. In this area, first grab the dagger from the big skull, then the leg bone to the right. Interact with the hole near the spider’s skeleton using the flat rock to create a pressure plate, and interact with it using Jake. Hit the other switch to the right. Grab the green gem and leave through the top-right exit.

Climb up the red rock using Jake and interact with the boulder using the dagger to get the red gem. Go left and climb up using Jake again. Examine Snail #11/15 to the left, then grab the blue gem left of that. Return down the two ledge s you climbed and head left around the path until you see a clasp sparkling in a skeleton and grab it, then get the gum from the next one (on the ground) and leave to the left to return to the throne area.

Interact with one statue using the clasp. Combine the gum with both the red and green gems (separately) to make them sticky. Place the green gem in the left and the red gem in the right side of the throne, then remove the orange gem using the dagger. Go to the right, combine the leg bone and blue gem to get the staff, and interact with the statue using it. Leave to the left to return to the area you got all the gems and stuff and climbed the ledges.

Combine the gum with the orange gem and place it in the dragon statue’s hand to get a wand, then take the orange gem back. Go back to the area with the throne. Interact with the clasp you placed in the one statue using the wand, and place the orange gem back in the throne. You’ll unlock Cracked.

Cracked
Escape from the dungeon below Billy's Cave.
1 guide

You’ll be back in the main area, so leave to the right to return to the kitchen. Go through all of Cinnamon Bun’s dialogue, then return the way you came. Go up the stairs on the upper-left and get the charcoal, then leave to the left. Interact with the first two fires using the wet willie, then use the charcoal on the third fire. Interact with the red button and get the peppers, then go up the stairs and to the room to the right to get get back to the kitchen. Interact with the pot using the pepper, then add the charcoal. Leave to the left again. Interact with the crack using wet willie to get a plank. Grab another plank by the stairs, then climb them and use the two planks to fix the gaps. Grab the soup from the ledge and return to the kitchen area. Interact with Cinnamon Bun using the soup to get a bill of sale.

You’ll now be back in Lemongrab’s castle. Leave to your left from where you start to reach the multi-door hall (this time with new advanced security, lol). Go to the controls and interact with the 1^st and 3^rd lemons using charcoal, then the 2^nd and 4^th lemons using the wet willie. This unlocks the far left door, so go inside. Take the lemon candy from the table. Go back to the control panel and interact with the 1^st lemon using wet willie, and the 2^nd one using charcoal. Go through the door on the far right. Combine the peppers and the lemon candy, and use it to interact with Lemongrab so he spits out a candy wad for you.

Exit to the left and go into the first door on your left, where the mitt is. Interact with the mitt using the sticky wad, then use the mitt to call the Nothung sword and trap it, then pick it up. Once you’re back in the cave, go to the right and before you do anything, inspect Snail #12/15 on the far-right table. Go to your left and down slightly. Look for a small campfire (it’s hard to see). Interact with it using the bill of sale, charcoal, and peppers. Finally, interact with the crack in the rock at the top of the area using the Nothung sword to finish the case and unlock Nothung To Lose.

Nothung To Lose
Find the last of the artifacts and seal Billy's Cave.
1 guide

CASE 5: Album (Re)Cover

First things first, go up to your room and interact with the radio three times to get Radio Starchie #13-15/15 and unlock the achievement.

Radio Starchie
Listen to all of the radio broadcasts in the Tree House bedroom.
1 guide

Interact with the tickertape downstairs to change scenes. Go through all of Marceline’s dialogue options. You’ll be back in Wizard City again. Grab the broom, then inspect Snail #13/15 (almost there!) near Ron James’ on the stairs. Interact with the vending machine to get a wizard coin, and exit to the bottom-right.

Interact with the tavern sign using the broom to swap it for the crowbar. Go through all of Bufo’s dialogue, then return to the main city and leave via the top-right to reach the alley. Open the sarcophagus using the crowbar to get the battery. Get the battery cable from the trash can, and the insulation from the streetlamp, then return the way you came and go into Ron James’. Talk to old Ron and go through all his dialogue. Interact with him using the coin to get a pendant. Exit to the main city and leave to the lower-right.

Interact with Bufo using the pendant to get a real to reel and charger. Combine the battery and battery cable, then combine that with the charger. Return to Ron James’ and give him the charger. To unlock Record Loss and switch scenes again.

Record Loss
Gather the equipment needed to re-record Finn's record.
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We’ll call this area with the Ice King the ‘main room’ for reference. Go through all of the Ice King’s dialogue, then go through the door just up and to the left of him to get to the kitchen. Grab the dirty plate from the table and the glass bottle from the floor to the left, interact with the sink using the dirty plate to get the cymbal. Exit this room, then leave to the right to reach the armory (where you got the scrolls in the earlier case).

Go down two sets of stairs and look around the lower area until you find Snail #14/15. Examine it. Interact with Gunter the penguin using the bottle to get a broom, then grab the blowtorch from the display case and return to the main room. Interact with the drumset using the cymbal, then head left and up the ramp. Interact with the saw frozen to the wall using the blowtorch to get it, then combine the saw with the broom. Use the resulting broom stick on the weights to the right of the King. You’ll change scenes again to Lemongrab’s castle.

Grab the string out of the wall and the cloth from the floor by the window to the left. Go through the door with the lemon-shaped hole in it in the middle. This is the room with the force-field earlier. Grab the screwdriver and use it to interact with the console to get a double blade switch. Pick up the wrench in the chamber where you were trapped in the earlier case, and the drill from the panel near the door, then return to the hall. Examine the pipes by the control panel to the right, then interact with them using the wrench.

Combine the drill with the long pipe to get a flute and combine that with the cloth strips. Next, put the double blade switch and the short pipe together, and combine the harp frame with the long string. Enter the throne room to the right and go through all of the dialogue to unlock Band Together and change scenes again.

Band Together
Convince Finn's friends to join the band.
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Interact with Princess Bubblegum and go through all of her dialogue. Leave to the upper-right. Go through all of Flame Princess’s dialogue here, then inspect Snail #15/15 near her to finally unlock Snail’s Pace.

Snail's Pace
Locate and interact with 15 snails.
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Look for a painting near the bottom of this area and try to pick it up, then after the fight grab it to get Princess Bubblegum Outfit 2. Leave to the lower-right to reach the kitchen. Grab the mop and use it on the soup spill. Get the hot coal that is revealed, and return to the previous area. Interact with fire wolf using the mop handle stick to reveal more hot coal and grab it. Interact with Flambo. After he mentions his loss, give him the hot coals you found. Interact with Cinnamon Bun, then give him the painting. Now you have a stack of thank you notes, so interact with Flame Princess and give them to her. You’ll change scenes to the forest.

Interact with the well using your sword to get a bucket and rope, then leave to the left. You’ll see a dress up in a tree, so use Jake to grab it (Princess Bubblegum Outfit 1). Leave to the right, and head down the familiar path to Tree Trunks’ place. Go through all of her dialogue options. Grab the seedling from the barrel of white flowers, and the spade nearby. Leave to the top (back to the forest path, tree stump area), then to the left. Look for a small pile of dirt and interact with it using the gardening spade to get the dirt item.

Leave to the right to return to the tree stump. Interact with the stump to hear her complaints, then combine the bucket and dirt, and the subsequent bucket of soil with the seedling. Interact with Tree Stump using this potted seedling to switch scenes back to Marceline’s place. Combine the mop handle stick with the rope, and use the fishing pole to pull the dress out of the water to get Princess Bubblegum Outfit 3. Interact with Princess Bubblegum to give her the three dresses and unlock Reel to Real.

Reel To Real
Put Finn's favorite song back onto the record album.
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IMPORTANT: After the lengthy scenes that ensue, you’ll be asked a single question with several answers. Choose The Emotions from the list of answers to unlock Flimpin’ the Diode. IF YOU AREN’T CAREFUL AND ACCIDENTALLY PICK THE WRONG OPTION, QUICKLY DASHBOARD OUT OF THE GAME AND RELOAD TO CONTINUE AND CHOOSE THE RIGHT OPTION OR YOU WILL VOID THIS ACHIEVEMENT AND POTENTIALLY REQUIRE A FULL 2^ND PLAYTHROUGH.

Flimpin' The Diode
Correctly guess the Grayble theme.
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Congratulations on your completion! I hope you stacked the XB1 and 360 versions to make this slightly more bearable due to the increased GS payout. Thanks for reading my guide!

2. General hints and tips

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