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