Drive through 10 sets of Yellow Smash Gates
Awarded when you drive through your 10th set of Yellow Smash Gates
6/2/2011
4:17:42 PM
Common 70.0%
Successfully land your first Super Jump
Awarded when you successfully land your 1st Super Jump
6/2/2011
4:06:04 PM
Common 72.0%
Portal Conservation Society
Complete Chamber 3 in the Hard-Light Surfaces co-op course using only 5 total portal placements
5/19/2011
2:28:34 PM
Ultra Rare 2.1%
Iron Grip
Never lose a cube in Chamber 6 of the Mass and Velocity co-op course
5/18/2011
9:27:00 PM
Ultra Rare 2.8%
Triple Crown
Solve 3 co-op chambers in the Mass and Velocity course in under 60 seconds each
5/18/2011
9:15:06 PM
Ultra Rare 1.8%
Asking for Trouble
Taunt GLaDOS in front of a camera in each of the five co-op courses
5/18/2011
8:34:07 PM
Very Rare 6.0%
Empty Gesture
Drop your co-op partner in goo while they are gesturing by removing the bridge under them
5/18/2011
8:16:25 PM
Ultra Rare 3.9%
Four Ring Circus
Enter 4 different portals without touching the ground in co-op
5/18/2011
8:09:44 PM
Ultra Rare 4.6%
Party of Three
Find the hidden companion cube in co-op test chamber
5/18/2011
8:00:47 PM
Ultra Rare 2.9%
Friends List With Benefits
While playing co-op, hug 3 different people on your friends list
5/17/2011
10:19:37 PM
Ultra Rare 1.4%
Professor Portal
After completing co-op, complete Calibration Course online with a friend who hasn’t played before
5/17/2011
10:16:52 PM
Ultra Rare 1.7%
Still Alive
Complete Course 4 with neither you nor your co-op partner dying
5/17/2011
9:42:10 PM
Ultra Rare 1.4%
Can't Touch This
Dance in front of a turret blocked by a hard light bridge in co-op
5/17/2011
9:36:29 PM
Very Rare 7.9%
Obstacle Building
Complete all test chambers in the Excursion Funnels co-op course
5/16/2011
11:58:59 PM
Rare 15.7%
Bridge Building
Complete all test chambers in the Hard-Light Surfaces co-op course
5/16/2011
10:31:12 PM
Rare 20.6%
Confidence Building
Complete all test chambers in the Mass and Velocity co-op course
5/16/2011
6:24:55 PM
Rare 31.6%
Narbacular Drop
Place a portal under your co-op partner while they are gesturing
5/16/2011
5:45:22 PM
Very Rare 5.5%
That's how you win a match
While on defense, take down an attacker who's completing a Primary Objective
5/14/2011
10:57:57 PM
Rare 24.9%