Assassin’s Creed IV: Black Flag achievements

Finish a game session with an ability set that you customized in Multiplayer.

Fully upgrade the Jackdaw.

Visit every location of the game.

Complete all naval contracts.

Explore all underwater shipwrecks.

Unlock all taverns.

Perform 5 air assassinations from a swinging rope.

Recruit 500 crew members.

Craft the Hunter outfit.

Fully upgrade your hideout.

Unlock the secret door in Tulum.

Hack 15 computers in Abstergo Entertainment.