Burnout
Fill the Nitrous bar then use it all in one go without hitting anything
12/28/2010
1:29:26 PM
Common 85.7%
Unnecessary Roughness
Use a riot shield to beat down an enemy in Single Player or Special Ops.
12/17/2010
9:56:07 PM
Rare 34.5%
Two Birds with One Stone
Kill 2 enemies with a single bullet in Single Player or Special Ops.
12/17/2010
9:21:15 PM
Common 57.6%
Three-some
Kill at least 3 enemies with a single shot from a grenade launcher in Single Player or Special Ops.
12/17/2010
8:37:16 PM
Common 54.5%
Insert Coin
Access the terminal and battle the forces of the Cosmic Silverback in Dead Ops Arcade.
12/17/2010
4:05:43 PM
Rare 36.9%