Ten plus foot-mobiles
Kill at least 10 enemies with one Predator missile in Single Player or Special Ops.
1/16/2010
2:17:57 PM
Rare 45.1%
Some Like it Hot
Kill 6 enemies in a row using a thermal weapon in Single Player or Special Ops.
1/16/2010
2:07:53 PM
Rare 39.8%
Two Birds with One Stone
Kill 2 enemies with a single bullet in Single Player or Special Ops.
1/16/2010
12:46:45 PM
Common 57.6%
Three-some
Kill at least 3 enemies with a single shot from a grenade launcher in Single Player or Special Ops.
1/16/2010
12:37:41 PM
Common 54.5%
Chapters 12-13 (Normal)
Complete Chapters 12 and 13 on Normal difficulty.
1/3/2010
1:57:50 PM
Rare 26.4%
Chapters 8-11 (Normal)
Complete Chapters 8 through 11 on Normal difficulty.
1/2/2010
12:59:45 AM
Rare 27.5%