Unnecessary Roughness
Use a riot shield to beat down an enemy in Single Player or Special Ops.
10/29/2010
9:17:15 AM
Rare 34.5%
Two Birds with One Stone
Kill 2 enemies with a single bullet in Single Player or Special Ops.
10/29/2010
9:03:57 AM
Common 57.6%
Ghost
Plant the C4 in 'Cliffhanger' without alerting or injuring anyone in the blizzard.
10/29/2010
8:51:28 AM
Ultra Rare 3.1%
The Price of War
Complete the single player campaign on Hardened or Veteran Difficulty.
10/29/2010
8:28:44 AM
Very Rare 5.8%
First Day of School
Complete 'S.S.D.D' and 'Team Player' on Veteran Difficulty.
10/29/2010
8:28:36 AM
Very Rare 7.1%
Three-some
Kill at least 3 enemies with a single shot from a grenade launcher in Single Player or Special Ops.
10/29/2010
7:26:10 AM
Common 54.5%
