Knock-knock
Kill 4 enemies with 4 shots during a slow-mo breach in Single Player or Special Ops.
11/23/2009
10:48:24 AM
Rare 15.2%
Desperado
Kill 5 enemies in a row using 5 different weapons or attachments in Single Player or Special Ops.
11/16/2009
8:38:44 AM
Rare 21.2%
Professional
Earn all 3 stars in at least 15 different Special Op missions.
11/13/2009
11:11:07 AM
Ultra Rare 3.2%
It Goes to Eleven
Earn at least 1 star in 11 different Special Op missions.
11/13/2009
1:13:11 AM
Rare 17.0%
Operative
Earn all 3 stars in at least 10 different Special Op missions.
11/12/2009
12:55:06 AM
Very Rare 5.6%
Three-some
Kill at least 3 enemies with a single shot from a grenade launcher in Single Player or Special Ops.
11/12/2009
12:36:30 AM
Common 54.5%
The Price of War
Complete the single player campaign on Hardened or Veteran Difficulty.
11/12/2009
12:14:38 AM
Very Rare 5.8%
Unnecessary Roughness
Use a riot shield to beat down an enemy in Single Player or Special Ops.
11/11/2009
11:52:59 PM
Rare 34.5%
Out of the Frying Pan...
Complete the mission in the airplane graveyard.
11/11/2009
11:43:04 PM
Rare 33.0%
The Harder They Fall
Kill 2 rappelling enemies in a row before they land on their feet in Single Player or Special Ops.
11/11/2009
10:45:11 PM
Rare 30.0%
Look Ma Two Hands
Kill 10 enemies in a row using akimbo weapons in Single Player or Special Ops.
11/11/2009
8:27:49 AM
Rare 12.6%
Some Like it Hot
Kill 6 enemies in a row using a thermal weapon in Single Player or Special Ops.
11/11/2009
8:15:22 AM
Rare 39.8%
Operational Asset
Earn all 3 stars in at least 5 different Special Op missions.
11/11/2009
4:01:15 AM
Very Rare 9.7%