Wake Up Call
Survive the manual override
Unlocked 19 Apr 2011 at 10:12 PM
You Monster
Reunite with GLaDOS
Unlocked 19 Apr 2011 at 10:35 PM
Undiscouraged
Complete the first Thermal Discouragement Beam test
Unlocked 19 Apr 2011 at 10:40 PM
Bridge Over Troubling Water
Complete the first Hard Light Bridge test
Unlocked 19 Apr 2011 at 11:25 PM
SaBOTour
Make a break for it
Unlocked 20 Apr 2011 at 1:57 AM
Stalemate Associate
Press the button!
Unlocked 20 Apr 2011 at 2:28 AM
Tater Tote
Carry science forward
Unlocked 15 May 2011 at 2:46 AM
Vertically Unchallenged
Master the Repulsion Gel
Unlocked 15 May 2011 at 2:46 AM
Stranger Than Friction
Master the Propulsion Gel
Unlocked 15 May 2011 at 2:46 AM
White Out
Complete the first Conversion Gel test
Unlocked 15 May 2011 at 2:46 AM
Tunnel of Funnel
Master the Excursion Funnel
Unlocked 15 May 2011 at 2:46 AM
Dual Pit Experiment
Do the same test twice
Unlocked 15 May 2011 at 2:46 AM
The Part Where He Kills You
This is that part
Unlocked 15 May 2011 at 2:46 AM
Lunacy
That just happened
Unlocked 15 May 2011 at 2:46 AM
Drop Box
Place a cube on a button without touching the cube
Unlocked 25 Apr 2011 at 12:17 AM
Overclocker
Complete Test Chamber 10 in 70 seconds
Pit Boss
Show that pit who's boss
Preservation of Mass
Break the rules in Test Chamber 07
Unlocked 19 Apr 2011 at 11:06 PM
Pturretdactyl
Use an Aerial Faith Plate to launch a turret
Unlocked 1 May 2011 at 11:12 PM
Final Transmission
Find the hidden signal in one of the Rat Man's dens
Unlocked 1 May 2011 at 11:10 PM
Good Listener
Take GLaDOS' escape advice
Unlocked 20 Apr 2011 at 1:57 AM
Scanned Alone
Stand in a defective turret detector
Unlocked 20 Apr 2011 at 2:13 AM
No Hard Feelings
Save a turret from redemption
Unlocked 20 Apr 2011 at 2:09 AM
Schrodinger's Catch
Catch a blue-painted box before it touches the ground
Unlocked 18 May 2013 at 12:38 PM
Ship Overboard
Discover the missing experiment
Unlocked 18 May 2013 at 12:49 PM
Door Prize
Examine all the vitrified test chamber doors
Unlocked 18 May 2013 at 12:49 PM
Portrait of a Lady
Find a hidden portrait
You Made Your Point
Refuse to solve the first test in Chapter 8
Smash TV
Break 11 test chamber monitors
High Five
Celebrate your cooperative calibration success
Unlocked 24 Apr 2011 at 9:13 PM
Team Building
Complete all test chambers in the Team Building co-op course
Unlocked 24 Apr 2011 at 9:29 PM
Confidence Building
Complete all test chambers in the Mass and Velocity co-op course
Unlocked 24 Apr 2011 at 10:09 PM
Bridge Building
Complete all test chambers in the Hard-Light Surfaces co-op course
Unlocked 24 Apr 2011 at 10:49 PM
Obstacle Building
Complete all test chambers in the Excursion Funnels co-op course
Unlocked 25 Apr 2011 at 12:56 AM
You Saved Science
Complete all test chambers in all courses of co-op
Unlocked 25 Apr 2011 at 1:58 AM
Iron Grip
Never lose a cube in Chamber 6 of the Mass and Velocity co-op course
Gesticul-8
Perform all 8 gestures of your own volition in co-op
Unlocked 25 Apr 2011 at 12:30 AM
Can't Touch This
Dance in front of a turret blocked by a hard light bridge in co-op
Unlocked 24 Apr 2011 at 10:32 PM
Empty Gesture
Drop your co-op partner in goo while they are gesturing by removing the bridge under them
Unlocked 25 Apr 2011 at 1:07 AM
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
Unlocked 24 Apr 2011 at 9:36 PM
Professor Portal
After completing co-op, complete Calibration Course online with a friend who hasn’t played before
Air Show
Perform 2 aerial gestures before touching the ground in co-op
Unlocked 25 Apr 2011 at 12:52 AM
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
Asking for Trouble
Taunt GLaDOS in front of a camera in each of the five co-op courses
Rock Portal Scissors
Win 3 co-op games of rock-paper-scissors in a row
Friends List With Benefits
While playing co-op, hug 3 different people on your friends list
Talent Show
Never lose a cube in Chamber 6 of the Mobility Gels co-op course
