Sacrifice 13 Hearts

Drink from all 5 Demonic Fountains in a single session

Reach max level with a weapon (base game weapons only)

Get a killing blow after the Round has ended.

Kill an enemy player from over 300 units away.

Win a match where the enemy team scored no points.

Kill a player with an environmental hazard.

Kill an enemy player while you are at or below 50 Health.

Fully upgrade a primary weapon

Down an enemy without taking return damage

Get a chain of 5 chickens strung together in Dead Ops Arcade.

In Die Maschine, kill 100 enemies without leaving the top of the crashed plane wing.