Complete Leading the Charge.

Bite 100 Civilians.

Destroy a balloon.

Clear out 20 Vampire packs.

Stay airborne for 250 meters while in Shadow Swarm.

Defeat Bloody Mary.

Return to the underground while no mission is active and travel from one end of the catacombs to the other.

Complete the assassination side missions.

Earn full negative Karma.

Unlock the evil ending.

Thunder drop into a group of 5 or more enemies.

Collect 50% of the available Dead Drops.