Friends List With Benefits
While playing co-op, hug 3 different people on your friends list
9/5/2012
10:32:39 AM
Ultra Rare 1.4%
Professor Portal
After completing co-op, complete Calibration Course online with a friend who hasn’t played before
9/5/2012
10:23:27 AM
Ultra Rare 1.7%
Alone in a pretty unforgiving Chamber with a Mysterious Pyramid
Cleared EX area 9 in the Solo Excursion.
8/30/2012
9:32:25 AM
Ultra Rare 3.2%
Completed a pretty unforgiving Chamber with a Mysterious Pyramid
Completed EX area 9 mural.
8/30/2012
9:29:46 AM
Ultra Rare 3.2%
Buddies in a pretty unforgiving Chamber with a Mysterious Pyramid
Cleared EX area 9 in the Group Excursion.
8/30/2012
8:05:53 AM
Ultra Rare 3.4%
Still Alive
Complete Course 4 with neither you nor your co-op partner dying
8/21/2012
3:11:19 AM
Ultra Rare 1.4%
Triple Crown
Solve 3 co-op chambers in the Mass and Velocity course in under 60 seconds each
8/21/2012
1:18:05 AM
Ultra Rare 1.8%
Asking for Trouble
Taunt GLaDOS in front of a camera in each of the five co-op courses
8/16/2012
5:27:27 AM
Very Rare 6.0%
Obstacle Building
Complete all test chambers in the Excursion Funnels co-op course
8/16/2012
5:19:10 AM
Rare 15.7%
Party of Three
Find the hidden companion cube in co-op test chamber
8/16/2012
5:14:24 AM
Ultra Rare 2.9%
Portal Conservation Society
Complete Chamber 3 in the Hard-Light Surfaces co-op course using only 5 total portal placements
8/15/2012
3:35:50 PM
Ultra Rare 2.1%
Bridge Building
Complete all test chambers in the Hard-Light Surfaces co-op course
8/15/2012
3:21:43 PM
Rare 20.6%
Can't Touch This
Dance in front of a turret blocked by a hard light bridge in co-op
8/15/2012
2:25:20 PM
Very Rare 7.9%
Empty Gesture
Drop your co-op partner in goo while they are gesturing by removing the bridge under them
8/15/2012
1:18:59 PM
Ultra Rare 3.9%
Confidence Building
Complete all test chambers in the Mass and Velocity co-op course
8/15/2012
12:35:21 PM
Rare 31.6%
Iron Grip
Never lose a cube in Chamber 6 of the Mass and Velocity co-op course
8/15/2012
12:03:23 PM
Ultra Rare 2.8%
Narbacular Drop
Place a portal under your co-op partner while they are gesturing
8/15/2012
11:02:08 AM
Very Rare 5.5%
Team Building
Complete all test chambers in the Team Building co-op course
8/15/2012
10:52:09 AM
Rare 46.8%