Obstacle Building
Complete all test chambers in the Excursion Funnels co-op course
5/24/2011
1:31:01 AM
Rare 15.7%
Party of Three
Find the hidden companion cube in co-op test chamber
5/24/2011
1:28:22 AM
Ultra Rare 2.9%
Bridge Building
Complete all test chambers in the Hard-Light Surfaces co-op course
5/24/2011
12:53:38 AM
Rare 20.6%
Can't Touch This
Dance in front of a turret blocked by a hard light bridge in co-op
5/24/2011
12:36:54 AM
Very Rare 7.9%
Confidence Building
Complete all test chambers in the Mass and Velocity co-op course
5/24/2011
12:09:49 AM
Rare 31.6%
Team Building
Complete all test chambers in the Team Building co-op course
5/17/2011
3:17:35 AM
Rare 46.8%
Bridge Over Troubling Water
Complete the first Hard-Light Surfaces test
5/4/2011
3:06:12 PM
Common 62.8%
