Here is the full list of all 31 Pixel Piracy achievements.
What was that? Did we just travel to hell?
Dig up 10 buried treasure chests
Kill a total of 1000 enemies
Visit a panda island
Loot a total of 10000 gold
Kill a hobo
Add a pirate flag to your ship
Capture 50 animals
Find a stranded hobo
Check out the Main Menu credits
Unearth an epic buried treasure
Defeat all the Legendary pirate ships
Defeat a legendary pirate
One of your pirates dies while using Kaboom
Have a pirate turn hostile due to low morale
Pick a fight with a legendary pirate
Have 5 of your crewmates wear diapers at the same time
Have 10 or more pirates on your crew
Horke the Flatulent poops
Capture an animal to be your pet
Have both Vitali Kirpu and Alexander Poysky on your ship
Plunder an enemy ship
Accept a bounty quest
Capture an enemy ship
Die for the first time
Have at least 5 poop on your ship
Find a treasure chest and open it
Visit an island with no town
Set sail for the first time
Have a seagull poop on your ship
Visit a tavern