Stun Specialist
Reached at least 100 stun attacks or sleep-inducing attacks.
6/11/2015
9:20:34 PM
Rare 40.4%
Don't you have anything else to do with your time?
Rolled 100 times or more in a single mission.
6/11/2015
3:57:09 AM
Very Rare 6.4%
Indirect Attack
Attacked enemy soldiers by blowing up an oil drum or truck (single player only).
3/22/2014
12:44:40 AM
Rare 32.4%
I feel... safe
Wearing a cardboard box gives you that feeling of inner peace.
3/20/2014
6:39:30 PM
Common 55.4%
Friends List With Benefits
While playing co-op, hug 3 different people on your friends list
1/5/2014
5:01:33 AM
Ultra Rare 1.4%
Professor Portal
After completing co-op, complete Calibration Course online with a friend who hasn’t played before
1/5/2014
4:48:32 AM
Ultra Rare 1.7%
Asking for Trouble
Taunt GLaDOS in front of a camera in each of the five co-op courses
1/4/2014
5:44:34 PM
Very Rare 6.0%
Can't Touch This
Dance in front of a turret blocked by a hard light bridge in co-op
1/4/2014
5:07:16 PM
Very Rare 7.9%
Iron Grip
Never lose a cube in Chamber 6 of the Mass and Velocity co-op course
1/4/2014
5:04:02 PM
Ultra Rare 2.8%
Empty Gesture
Drop your co-op partner in goo while they are gesturing by removing the bridge under them
1/2/2014
7:51:53 PM
Ultra Rare 3.9%
Get Physical
Seal out an attacking player to gain possession of the ball
9/1/2013
9:38:07 PM
Common 71.1%
