Knock-knock
Kill 4 enemies with 4 shots during a slow-mo breach in Single Player or Special Ops.
12/24/2009
7:39:25 PM
Rare 15.2%
Three-some
Kill at least 3 enemies with a single shot from a grenade launcher in Single Player or Special Ops.
12/24/2009
7:39:18 PM
Common 54.5%
Out of the Frying Pan...
Complete the mission in the airplane graveyard.
11/28/2009
12:31:34 PM
Rare 33.0%
Unnecessary Roughness
Use a riot shield to beat down an enemy in Single Player or Special Ops.
11/21/2009
5:52:54 PM
Rare 34.5%
Some Like it Hot
Kill 6 enemies in a row using a thermal weapon in Single Player or Special Ops.
11/21/2009
5:36:12 PM
Rare 39.8%
Ten plus foot-mobiles
Kill at least 10 enemies with one Predator missile in Single Player or Special Ops.
11/17/2009
9:55:34 PM
Rare 45.1%