Knock-knock
Kill 4 enemies with 4 shots during a slow-mo breach in Single Player or Special Ops.
12/26/2009
5:28:26 PM
Rare 15.2%
Desperado
Kill 5 enemies in a row using 5 different weapons or attachments in Single Player or Special Ops.
12/20/2009
11:38:33 PM
Rare 21.2%
The Harder They Fall
Kill 2 rappelling enemies in a row before they land on their feet in Single Player or Special Ops.
12/20/2009
11:29:56 PM
Rare 30.0%
Grind it Out
Win a match with 10 men Online or when playing on Professional difficulty or higher
12/10/2009
2:42:54 PM
Rare 32.2%
Out of the Frying Pan...
Complete the mission in the airplane graveyard.
11/21/2009
12:19:42 AM
Rare 33.0%
Unnecessary Roughness
Use a riot shield to beat down an enemy in Single Player or Special Ops.
11/20/2009
10:35:50 PM
Rare 34.5%
Some Like it Hot
Kill 6 enemies in a row using a thermal weapon in Single Player or Special Ops.
11/20/2009
9:33:58 PM
Rare 39.8%
Ten plus foot-mobiles
Kill at least 10 enemies with one Predator missile in Single Player or Special Ops.
11/20/2009
9:30:11 PM
Rare 45.1%
Three-some
Kill at least 3 enemies with a single shot from a grenade launcher in Single Player or Special Ops.
11/20/2009
8:47:50 PM
Common 54.5%
Two Birds with One Stone
Kill 2 enemies with a single bullet in Single Player or Special Ops.
11/20/2009
8:41:36 PM
Common 57.6%