Knock-knock
Kill 4 enemies with 4 shots during a slow-mo breach in Single Player or Special Ops.
11/21/2009
12:41:20 AM
Rare 15.2%
Downed but Not Out
Kill 4 enemies in a row while downed in Special Ops.
11/20/2009
10:14:25 PM
Very Rare 5.8%
It Goes to Eleven
Earn at least 1 star in 11 different Special Op missions.
11/20/2009
9:06:02 PM
Rare 17.0%
Some Like it Hot
Kill 6 enemies in a row using a thermal weapon in Single Player or Special Ops.
11/15/2009
2:01:03 AM
Rare 39.8%
No Rest For the Wary
Knife an enemy without him ever knowing you were there in Single Player or Special Ops.
11/15/2009
1:36:02 AM
Rare 25.3%