High Five
Unlocked atCelebrate your cooperative calibration success
Team Building
Unlocked atComplete all test chambers in the Team Building co-op course
Confidence Building
Unlocked atComplete all test chambers in the Mass and Velocity co-op course
Bridge Building
Unlocked atComplete all test chambers in the Hard-Light Surfaces co-op course
Obstacle Building
Unlocked atComplete all test chambers in the Excursion Funnels co-op course
You Saved Science
Unlocked atComplete all test chambers in all courses of co-op
Gesticul-8
Unlocked atPerform all 8 gestures of your own volition in co-op
Air Show
Unlocked atPerform 2 aerial gestures before touching the ground in co-op
Four Ring Circus
Unlocked atEnter 4 different portals without touching the ground in co-op
Wake Up Call
Not unlocked yetSurvive the manual override
You Monster
Not unlocked yetReunite with GLaDOS
Undiscouraged
Not unlocked yetComplete the first Thermal Discouragement Beam test
Bridge Over Troubling Water
Not unlocked yetComplete the first Hard Light Bridge test
SaBOTour
Not unlocked yetMake a break for it
Stalemate Associate
Not unlocked yetPress the button!
Tater Tote
Not unlocked yetCarry science forward
Vertically Unchallenged
Not unlocked yetMaster the Repulsion Gel
Stranger Than Friction
Not unlocked yetMaster the Propulsion Gel
White Out
Not unlocked yetComplete the first Conversion Gel test
Tunnel of Funnel
Not unlocked yetMaster the Excursion Funnel
Dual Pit Experiment
Not unlocked yetDo the same test twice
The Part Where He Kills You
Not unlocked yetThis is that part
Lunacy
Not unlocked yetThat just happened
Drop Box
Not unlocked yetPlace a cube on a button without touching the cube