Unnecessary Roughness
Use a riot shield to beat down an enemy in Single Player or Special Ops.
11/9/2010
8:05:38 AM
Rare 34.5%
Operative
Earn all 3 stars in at least 10 different Special Op missions.
9/30/2010
6:40:06 PM
Very Rare 5.6%
Desperado
Kill 5 enemies in a row using 5 different weapons or attachments in Single Player or Special Ops.
9/28/2010
7:35:09 AM
Rare 21.2%
It Goes to Eleven
Earn at least 1 star in 11 different Special Op missions.
9/27/2010
8:08:39 AM
Rare 17.0%
Some Like it Hot
Kill 6 enemies in a row using a thermal weapon in Single Player or Special Ops.
9/14/2010
8:21:35 AM
Rare 39.8%
Operational Asset
Earn all 3 stars in at least 5 different Special Op missions.
9/14/2010
7:53:38 AM
Very Rare 9.7%
No Rest For the Wary
Knife an enemy without him ever knowing you were there in Single Player or Special Ops.
9/14/2010
7:36:02 AM
Rare 25.3%
Look Ma Two Hands
Kill 10 enemies in a row using akimbo weapons in Single Player or Special Ops.
9/13/2010
9:17:40 AM
Rare 12.6%
Ten plus foot-mobiles
Kill at least 10 enemies with one Predator missile in Single Player or Special Ops.
8/29/2010
8:49:35 AM
Rare 45.1%
Two Birds with One Stone
Kill 2 enemies with a single bullet in Single Player or Special Ops.
8/29/2010
6:57:54 AM
Common 57.6%
Three-some
Kill at least 3 enemies with a single shot from a grenade launcher in Single Player or Special Ops.
8/29/2010
6:52:49 AM
Common 54.5%
Throw a Six and a Half
On Hardened or Veteran difficulty, complete a level without dying. (Solo only)
4/11/2009
11:16:35 PM
Very Rare 5.6%
Firestarter
Complete a level using only the flamethrower. Melee, grenades & explosives are OK.
4/6/2009
12:42:59 AM
Very Rare 7.5%