Triple Crown
Solve 3 co-op chambers in the Mass and Velocity course in under 60 seconds each
11/28/2011
3:35:37 PM
Ultra Rare 1.8%
Four Ring Circus
Enter 4 different portals without touching the ground in co-op
11/28/2011
3:16:40 PM
Ultra Rare 4.6%
Portal Conservation Society
Complete Chamber 3 in the Hard-Light Surfaces co-op course using only 5 total portal placements
11/28/2011
3:03:09 PM
Ultra Rare 2.1%
Party of Three
Find the hidden companion cube in co-op test chamber
11/28/2011
2:46:38 PM
Ultra Rare 2.9%
Empty Gesture
Drop your co-op partner in goo while they are gesturing by removing the bridge under them
11/28/2011
2:33:19 PM
Ultra Rare 3.9%
Can't Touch This
Dance in front of a turret blocked by a hard light bridge in co-op
11/28/2011
2:30:19 PM
Very Rare 7.9%
Iron Grip
Never lose a cube in Chamber 6 of the Mass and Velocity co-op course
11/28/2011
2:25:34 PM
Ultra Rare 2.8%
Final Transmission
Find the hidden signal in one of the Rat Man's dens
11/28/2011
1:33:52 PM
Very Rare 7.7%
Obstacle Building
Complete all test chambers in the Excursion Funnels co-op course
11/28/2011
12:35:19 AM
Rare 15.7%
Bridge Building
Complete all test chambers in the Hard-Light Surfaces co-op course
11/27/2011
11:06:38 PM
Rare 20.6%
