Unnecessary Roughness
Use a riot shield to beat down an enemy in Single Player or Special Ops.
11/22/2009
3:28:12 PM
Rare 34.5%
Some Like it Hot
Kill 6 enemies in a row using a thermal weapon in Single Player or Special Ops.
11/22/2009
7:11:28 AM
Rare 39.8%
Ten plus foot-mobiles
Kill at least 10 enemies with one Predator missile in Single Player or Special Ops.
11/22/2009
6:12:15 AM
Rare 45.1%
Two Birds with One Stone
Kill 2 enemies with a single bullet in Single Player or Special Ops.
11/22/2009
5:12:30 AM
Common 57.6%
No Rest For the Wary
Knife an enemy without him ever knowing you were there in Single Player or Special Ops.
11/22/2009
5:03:27 AM
Rare 25.3%
Three-some
Kill at least 3 enemies with a single shot from a grenade launcher in Single Player or Special Ops.
11/22/2009
4:42:19 AM
Common 54.5%
Primarch Hunter
Kill 200 Elite Chimera in the Cooperative campaign.
10/29/2009
1:42:24 AM
Very Rare 6.2%
I See You
Kill 50 enemies through solid matter with the Auger in the single player Campaign.
9/5/2009
4:40:59 PM
Rare 37.4%
Sharpshooter
Get 30 headshots while scoped in with the Fareye or Marksman in the single player Campaign.
7/20/2009
5:07:34 AM
Rare 31.1%
They Go "Boom"
Get 30 kills with the Magnum secondary fire in the single player Campaign.
7/20/2009
5:02:21 AM
Rare 17.4%