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