Free your first slave.
Liberate 500 slaves.
Perform 5 air assassinations from a swinging rope.
Board a ship without losing any crew members.
Kill 5 guards at once with a blunderbuss.
Achieve 100% synchronization
Kill a guard ringing a bell.
Harpoon a killer whale.
Swim a total of 1 nmi.
Plunder 30 ships.
