Bare-knuckle Expert
Defeat ten enemies in a row with hand-to-hand combat
6/13/2010
10:03:14 AM
Rare 22.5%
Run-and-Gunner
Defeat 20 enemies by shooting from the hip (without aiming with L1)
6/13/2010
9:34:34 AM
Rare 21.3%
No Rest For the Wary
Knife an enemy without him ever knowing you were there in Single Player or Special Ops.
3/28/2010
8:48:41 AM
Rare 25.3%