Unlocked: Apr 18, 2011 11:13pm
Wake Up Call
Survive the manual override
Unlocked: Apr 19, 2011 11:58am
You Monster
Reunite with GLaDOS
Unlocked: Apr 19, 2011 12:04pm
Undiscouraged
Complete the first Thermal Discouragement Beam test
Unlocked: Apr 19, 2011 12:40pm
Bridge Over Troubling Water
Complete the first Hard Light Bridge test
Unlocked: Apr 19, 2011 1:38pm
SaBOTour
Make a break for it
Unlocked: Apr 19, 2011 2:41pm
Stalemate Associate
Press the button!
Unlocked: Apr 20, 2011 1:49pm
Tater Tote
Carry science forward
Unlocked: Apr 20, 2011 1:20pm
Vertically Unchallenged
Master the Repulsion Gel
Unlocked: Apr 21, 2011 1:03am
Stranger Than Friction
Master the Propulsion Gel
Unlocked: Apr 21, 2011 1:22am
White Out
Complete the first Conversion Gel test
Unlocked: Apr 21, 2011 2:48am
Tunnel of Funnel
Master the Excursion Funnel
Unlocked: Apr 21, 2011 1:57am
Dual Pit Experiment
Do the same test twice
Unlocked: Apr 21, 2011 3:20am
The Part Where He Kills You
This is that part
Unlocked: Apr 21, 2011 4:23am
Lunacy
That just happened
Unlocked: May 8, 2011 1:11am
Drop Box
Place a cube on a button without touching the cube
Unlocked: May 8, 2011 1:47am
Preservation of Mass
Break the rules in Test Chamber 07
Unlocked: May 8, 2011 1:41am
Pturretdactyl
Use an Aerial Faith Plate to launch a turret
Unlocked: May 8, 2011 1:42am
Final Transmission
Find the hidden signal in one of the Rat Man's dens
Unlocked: Apr 19, 2011 1:38pm
Good Listener
Take GLaDOS' escape advice
Unlocked: Apr 20, 2011 1:42pm
Ship Overboard
Discover the missing experiment
Unlocked: Apr 21, 2011 12:41am
Portrait of a Lady
Find a hidden portrait
Unlocked: Apr 20, 2011 2:22pm
High Five
Celebrate your cooperative calibration success
Unlocked: Apr 20, 2011 2:40pm
Team Building
Complete all test chambers in the Team Building co-op course
Unlocked: Apr 30, 2011 2:42pm
Confidence Building
Complete all test chambers in the Mass and Velocity co-op course
Unlocked: Apr 30, 2011 3:31pm
Bridge Building
Complete all test chambers in the Hard-Light Surfaces co-op course
Unlocked: May 3, 2011 3:56pm
Obstacle Building
Complete all test chambers in the Excursion Funnels co-op course
Unlocked: May 3, 2011 4:56pm
You Saved Science
Complete all test chambers in all courses of co-op
Unlocked: May 3, 2011 3:24pm
Gesticul-8
Perform all 8 gestures of your own volition in co-op
Unlocked: Apr 30, 2011 3:12pm
Can't Touch This
Dance in front of a turret blocked by a hard light bridge in co-op
Unlocked: Nov 29, 2012 3:36pm
Professor Portal
After completing co-op, complete Calibration Course online with a friend who hasn’t played before
Unlocked: May 3, 2011 3:38pm
Air Show
Perform 2 aerial gestures before touching the ground in co-op
Unlocked: Nov 29, 2012 3:41pm
Asking for Trouble
Taunt GLaDOS in front of a camera in each of the five co-op courses
Unlocked: Apr 20, 2011 2:42pm
Rock Portal Scissors
Win 3 co-op games of rock-paper-scissors in a row
Unlocked: Nov 29, 2012 3:40pm
Friends List With Benefits
While playing co-op, hug 3 different people on your friends list
Overclocker
Complete Test Chamber 10 in 70 seconds
Pit Boss
Show that pit who's boss
Scanned Alone
Stand in a defective turret detector
No Hard Feelings
Save a turret from redemption
Schrodinger's Catch
Catch a blue-painted box before it touches the ground
Door Prize
Examine all the vitrified test chamber doors
You Made Your Point
Refuse to solve the first test in Chapter 8
Smash TV
Break 11 test chamber monitors
Iron Grip
Never lose a cube in Chamber 6 of the Mass and Velocity co-op course
Empty Gesture
Drop your co-op partner in goo while they are gesturing by removing the bridge under them
Party of Three
Find the hidden companion cube in co-op test chamber
Narbacular Drop
Place a portal under your co-op partner while they are gesturing
Portal Conservation Society
Complete Chamber 3 in the Hard-Light Surfaces co-op course using only 5 total portal placements
Four Ring Circus
Enter 4 different portals without touching the ground in co-op
Triple Crown
Solve 3 co-op chambers in the Mass and Velocity course in under 60 seconds each
Still Alive
Complete Course 4 with neither you nor your co-op partner dying
Talent Show
Never lose a cube in Chamber 6 of the Mobility Gels co-op course
