| Achievement | How to unlock
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|---|
| Acceptable Ending (40 points) | Defeat Magic Man's latest jerky plan.
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| Band Together (40 points) | Convince Finn's friends to join the band.
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| Cake Plate Quest (40 points) | Free Abracadaniel from jail.
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| Cracked (40 points) | Escape from the dungeon below Billy's Cave.
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| Dance OFF (40 points) | Find a cure for the dancing epidemic.
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| Flimpin' The Diode (60 points) | Correctly guess the Grayble theme.
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| Hairy Beast (40 points) | Find the hairy beast that has been wreaking havoc.
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| Long Live The (Ice) King (40 points) | Put the king back in charge of his kingdom.
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| Lump Support (40 points) | Fix all of the noble deeds that were done incorrectly.
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| Nothung To Lose (40 points) | Find the last of the artifacts and seal Billy's Cave.
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| Record Loss (40 points) | Gather the equipment needed to re-record Finn's record.
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| Reel To Real (40 points) | Put Finn's favorite song back onto the record album.
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| Sound Sword Quest (40 points) | Find the missing Sound Sword.
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| Sweet, Sweet Magic (40 points) | Defeat the wizards and free the kidnapped Candy People.
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| Wet Willie (40 points) | Find out why the Fire Kingdom's flames are going out.
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| Wizards Only, Fools (40 points) | Find a way to get into the wizard "party."
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| Achievement | How to unlock
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|---|
| Combo Time (60 points) | Perform a 15-hit combo in combat without being hit.
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| Home Sweet Home (20 points) | Visit every area in and around the tree house.
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| I See You (30 points) | Use the telescope in the boat to look at three different kingdoms.
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| New to Ooo (60 points) | Say hello to the new character in Ooo.
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| Radio Starchie (60 points) | Listen to all of the radio broadcasts in the Tree House bedroom.
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| Snail's Pace (60 points) | Locate and interact with 15 snails.
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| Stretch Goals (30 points) | Use all four Jake combat forms at least once in the game.
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| Wrong Number (20 points) | Dial 10 wrong numbers on the pay phone.
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