Full list of all 36 Adventure Time: Pirates of the Enchiridion achievements. It takes around 8-10 hours to unlock all of the achievements on Windows.
Collect all other achievements.
Get Finn to level 10.
Get Marceline to level 10.
Get Jake to level 10.
Pull the plug!
Complete all side quests.
Take all the penguins to the tree house.
Light all the braziers in the Fire Kingdom.
Get BMO to level 10.
Free the caged Mushroom people.
Fall in to water more than 10 times.
Restore light to the treasure tree.
Find Shelby the snail.
Beat Uncle Gumbald in battle.
Use all the pirate lookouts.
Overskronk 4 enemies in a single battle.
Dock at all the islands.
Beat the Fire Giant in battle.
Beat the Mother Varmint in battle.
Inflict more than 1 bunk effect on to a single enemy.
Open 15 treasure chests.
Use BMO's "Analyze.exe".
Unlock a gate with BMO.
Beat 50 enemies in battle.
Destroy 10 Sea destructibles.
Beat Fern in battle.
Win your first fight against a higher level enemy.
Destroy 250 land destructibles.
Fish out 25 items from the sea.
Use a pirate lookout.
Complete your first side quest.
Buy your first item from the shop.
Revive a hero.
Destroy 50 land destructibles.
Win your first sea battle.
Pass the first Interrogation.