Ghost
Plant the C4 in 'Cliffhanger' without alerting or injuring anyone in the blizzard.
2/17/2010
7:31:40 AM
Ultra Rare 3.1%
Desperado
Kill 5 enemies in a row using 5 different weapons or attachments in Single Player or Special Ops.
2/17/2010
7:24:04 AM
Rare 21.2%
Three-some
Kill at least 3 enemies with a single shot from a grenade launcher in Single Player or Special Ops.
2/17/2010
7:16:21 AM
Common 54.5%
Pit Boss
Run The Pit in 'S.S.D.D' and finish with a final time under 30 seconds.
2/17/2010
7:14:33 AM
Ultra Rare 2.8%
No Rest For the Wary
Knife an enemy without him ever knowing you were there in Single Player or Special Ops.
2/17/2010
7:01:55 AM
Rare 25.3%
Two Birds with One Stone
Kill 2 enemies with a single bullet in Single Player or Special Ops.
2/17/2010
6:51:19 AM
Common 57.6%
Scorched Earth
Complete 'Burn 'em Out' on Veteran difficulty. (Solo only)
2/3/2010
7:59:56 AM
Ultra Rare 3.6%
The Hammer Strikes
Complete 'Their Land, Their Blood' on Veteran difficulty. (Solo only)
2/3/2010
6:33:08 AM
Ultra Rare 4.2%
Hammer Time
Repair 200 window boards in a single game. (Map Pack 2 only)
1/29/2010
7:16:35 AM
Ultra Rare 3.9%
Der Electrician!
Link all teleport pads before round 7. (Map Pack 3 only)
1/25/2010
2:56:47 PM
Very Rare 7.6%
Get Your Left Foot Wet
Complete a match in Campaign Co-Op mode. (Online co-op only)
1/24/2010
6:42:45 AM
Rare 12.6%
The Sword Is Broken
Complete 'Hard Landing' on Veteran difficulty. (Solo only)
1/24/2010
1:46:53 AM
Very Rare 5.6%
Purple Heart
When staring into the face of adversity, show courage and persevere.
1/24/2010
1:26:05 AM
Rare 28.3%
Bloody Peleliu
Complete 'Little Resistance' on Veteran difficulty. (Solo only)
1/23/2010
2:17:20 PM
Very Rare 6.4%
Get Your Hands Dirty
Complete 'Semper Fi' on Veteran difficulty. (Solo only)
1/23/2010
2:00:31 PM
Very Rare 7.5%