Pass the first Interrogation.

Win your first fight against a higher level enemy.

Inflict more than 1 bunk effect on to a single enemy.

Buy your first item from the shop.

Destroy 50 land destructibles.

Destroy 250 land destructibles.

Destroy 10 Sea destructibles.

Fish out 25 items from the sea.

Open 15 treasure chests.

Get Finn to level 10.

Get Jake to level 10.

Get Marceline to level 10.

Get BMO to level 10.

Revive a hero.

Complete your first side quest.

Use a pirate lookout.

Win your first sea battle.

Dock at all the islands.

Use all the pirate lookouts.

Overskronk 4 enemies in a single battle.

Beat 50 enemies in battle.

Pull the plug!

Find the snail.

Complete all side quests.

Restore light to the treasure tree.

Take all the penguins to the tree house.

Collect all other achievements.