This achievement is called "Pirate" (Description: 'Become a Pirate' completed).
You must impress Steelbeard, in order to become a pirate. You will have to:
- Kill crabs with Blake -> therefore you have to learn the "Kick"-skill from Blake and then go crab hunting.
- Confront "Hank" -> He's by the bar in the tavern at the pirate's den, he will come to you as soon as you spoke with both prostitutes (Holly & Lola)
- Find Pete's treasure -> "Holly" in the tavern will tell you something about it for 100gold.
- Plunder any grave -> If you found pete's treasure, there is an ancient grave right next to it. Just steal the Idol in there.
- Find O'Brian's treasure -> O'Brian is in the tavern aswell. He will drink for the map. You will have to get 500gold and a painkiller, too.
- Free "Largo" -> He's the pirate prisoner. You will have to get his red bandana, his black pearl earring and his boots. Then you can go to "Stone" at the Pirate's Den.
- Kill the traitor and the seamonster -> This will be a quest of "Booze" (Following Meeks).
- Help Booze with his rum delivery (Sugar & Water)
- Fight "Morris" about his lucky hat. The lucky hat can be found outside Booze's destillery (2nd floor) next to a barrel.
As soon as you completed most of the above quests, talk to Steelbeard and brag about all of them.
If you have any questions, please feel free to comment below.
Achievement unlocked!