Here is the full list of all 26 Braveland Pirate achievements. It takes around 15-20 hours to unlock all of the achievements on Windows.
Rejected all the assassination contracts.
Have won 150 battles.
The Great Reaper defeated.
Game completed without using the easy level of difficulty.
Game completed using only the hard level of difficulty.
All the bosses defeated.
Looted all treasure chests and hidden caches.
Have overcome 25 random encounters in the sea.
Fulfilled all the assassination contracts.
All pirate tricks learned.
Obtained the old man's artefact in the sea.
Visited all islands.
Jarl Erik defeated.
Have answered all the questions of the sages.
Six pirate tricks learned.
Rejected the Iron Bank's offer.
Bought an item for hero.
Fought through all dungeons and arenas.
Sir Rodrick defeated.
All four equipment items on.
Davy Jones defeated.
Looted 7 treasure chests and hidden caches.
Pirate trick learned.
You defeated the army without losing a single warrior.
Cabin boys have joined you.
Page on Facebook or Twitter visited.