Asking for Trouble
Taunt GLaDOS in front of a camera in each of the five co-op courses
4/2/2013
11:56:57 PM
Very Rare 6.0%
Iron Grip
Never lose a cube in Chamber 6 of the Mass and Velocity co-op course
4/2/2013
11:50:19 PM
Ultra Rare 2.8%
Party of Three
Find the hidden companion cube in co-op test chamber
4/2/2013
11:35:27 PM
Ultra Rare 2.9%
Portal Conservation Society
Complete Chamber 3 in the Hard-Light Surfaces co-op course using only 5 total portal placements
4/2/2013
11:27:16 PM
Ultra Rare 2.1%
Four Ring Circus
Enter 4 different portals without touching the ground in co-op
4/2/2013
10:52:17 PM
Ultra Rare 4.6%
Schrodinger's Catch
Catch a blue-painted box before it touches the ground
3/31/2013
7:49:28 PM
Very Rare 6.9%
Obstacle Building
Complete all test chambers in the Excursion Funnels co-op course
3/30/2013
10:49:05 PM
Rare 15.7%
Confidence Building
Complete all test chambers in the Mass and Velocity co-op course
3/27/2013
6:32:32 PM
Rare 31.6%
Team Building
Complete all test chambers in the Team Building co-op course
3/27/2013
6:21:23 PM
Rare 46.8%