Four Ring Circus
Enter 4 different portals without touching the ground in co-op
4/20/2011
4:44:41 AM
Ultra Rare 4.6%
Team Building
Complete all test chambers in the Team Building co-op course
4/20/2011
4:31:51 AM
Rare 46.8%
Narbacular Drop
Place a portal under your co-op partner while they are gesturing
4/20/2011
4:12:44 AM
Very Rare 5.5%
Bridge Over Troubling Water
Complete the first Hard-Light Surfaces test
4/19/2011
7:43:51 PM
Common 62.8%
