Confidence Building
Complete all test chambers in the Mass and Velocity co-op course
12/9/2011
8:37:19 AM
Rare 31.6%
Team Building
Complete all test chambers in the Team Building co-op course
12/7/2011
10:30:25 AM
Rare 46.8%
Bridge Over Troubling Water
Complete the first Hard-Light Surfaces test
12/6/2011
7:14:51 AM
Common 62.8%
Long Arm of Marston
Kill 500 enemies with any rifle, repeater, or shotgun in any game mode.
12/13/2010
3:18:39 AM
Rare 28.9%
The Superior Dance
Complete "Mother Superior Blues" Survivor Mission.
12/9/2010
4:00:16 AM
Very Rare 6.0%
Judge A Man By The...
Complete "Cure For Most of What Ails You" and "Get Back in that Hole, Partner" Survivor Missions.
12/7/2010
7:07:37 AM
Very Rare 7.6%
The Downward Spiral
Complete "Curious Tales from Blackwater, USA" Survivor Mission.
12/7/2010
2:18:03 AM
Rare 20.5%
Insert Coin
Access the terminal and battle the forces of the Cosmic Silverback in Dead Ops Arcade.
11/23/2010
9:40:38 AM
Rare 36.9%
Sally Likes Blood
Demonstrate killer economic sensibilities by taking down 3 enemies with a single bullet.
11/12/2010
4:21:13 AM
Rare 34.9%