No Rest For the Wary
Knife an enemy without him ever knowing you were there in Single Player or Special Ops.
1/25/2010
9:12:02 AM
Rare 25.3%
Ghost
Plant the C4 in 'Cliffhanger' without alerting or injuring anyone in the blizzard.
1/24/2010
10:00:29 PM
Ultra Rare 3.1%
Look Ma Two Hands
Kill 10 enemies in a row using akimbo weapons in Single Player or Special Ops.
1/23/2010
4:40:26 AM
Rare 12.6%
The Price of War
Complete the single player campaign on Hardened or Veteran Difficulty.
1/20/2010
6:56:16 AM
Very Rare 5.8%
Drive By
Kill 20 enemies in a row while driving a vehicle in Single Player or Special Ops.
1/20/2010
6:49:05 AM
Very Rare 8.1%
The Harder They Fall
Kill 2 rappelling enemies in a row before they land on their feet in Single Player or Special Ops.
1/20/2010
6:26:26 AM
Rare 30.0%
Knock-knock
Kill 4 enemies with 4 shots during a slow-mo breach in Single Player or Special Ops.
1/3/2010
9:19:07 AM
Rare 15.2%
Unnecessary Roughness
Use a riot shield to beat down an enemy in Single Player or Special Ops.
1/1/2010
11:58:31 AM
Rare 34.5%
Some Like it Hot
Kill 6 enemies in a row using a thermal weapon in Single Player or Special Ops.
1/1/2010
11:24:04 AM
Rare 39.8%
Ten plus foot-mobiles
Kill at least 10 enemies with one Predator missile in Single Player or Special Ops.
1/1/2010
9:45:29 AM
Rare 45.1%
