Old Faithful
Kill 400 enemies with assault rifles, submachine guns or shotguns
3/3/2010
4:18:02 PM
Rare 43.1%
Knock-knock
Kill 4 enemies with 4 shots during a slow-mo breach in Single Player or Special Ops.
2/26/2010
5:21:49 PM
Rare 15.2%
Professional
Earn all 3 stars in at least 15 different Special Op missions.
2/23/2010
9:09:01 AM
Ultra Rare 3.2%
Operative
Earn all 3 stars in at least 10 different Special Op missions.
1/8/2010
6:28:05 PM
Very Rare 5.6%
Ghost
Plant the C4 in 'Cliffhanger' without alerting or injuring anyone in the blizzard.
1/7/2010
10:21:33 AM
Ultra Rare 3.1%
First Day of School
Complete 'S.S.D.D' and 'Team Player' on Veteran Difficulty.
1/5/2010
2:50:39 PM
Very Rare 7.1%
Desperado
Kill 5 enemies in a row using 5 different weapons or attachments in Single Player or Special Ops.
1/2/2010
7:36:00 PM
Rare 21.2%
Operational Asset
Earn all 3 stars in at least 5 different Special Op missions.
1/2/2010
6:04:55 PM
Very Rare 9.7%
The Harder They Fall
Kill 2 rappelling enemies in a row before they land on their feet in Single Player or Special Ops.
1/2/2010
3:29:42 PM
Rare 30.0%
No Rest For the Wary
Knife an enemy without him ever knowing you were there in Single Player or Special Ops.
1/2/2010
2:44:58 PM
Rare 25.3%