Diamond Master
As a single player, earn Diamond on two or more Challenges on a single play of a song (Quickplay+)
3/13/2011
11:47:42 AM
Very Rare 9.2%
Three-some
Kill at least 3 enemies with a single shot from a grenade launcher in Single Player or Special Ops.
3/13/2011
12:27:40 AM
Common 54.5%
Unnecessary Roughness
Use a riot shield to beat down an enemy in Single Player or Special Ops.
3/13/2011
12:27:27 AM
Rare 34.5%
No Rest For the Wary
Knife an enemy without him ever knowing you were there in Single Player or Special Ops.
3/13/2011
12:20:46 AM
Rare 25.3%
Operational Asset
Earn all 3 stars in at least 5 different Special Op missions.
3/13/2011
12:03:22 AM
Very Rare 9.7%
Two Birds with One Stone
Kill 2 enemies with a single bullet in Single Player or Special Ops.
3/12/2011
11:45:56 PM
Common 57.6%
Look Ma Two Hands
Kill 10 enemies in a row using akimbo weapons in Single Player or Special Ops.
3/12/2011
11:14:29 PM
Rare 12.6%