Team Building
Complete all test chambers in the Team Building co-op course
5/22/2011
8:06:15 PM
Rare 46.8%
Confidence Building
Complete all test chambers in the Mass and Velocity co-op course
5/21/2011
11:47:17 PM
Rare 31.6%
Frozen in Time
Kill 50 Necromorphs while they are in Stasis (single player only)
5/8/2011
9:52:10 PM
Rare 28.0%
Bridge Over Troubling Water
Complete the first Hard-Light Surfaces test
4/23/2011
1:20:03 PM
Common 62.8%
