Unlocked: Apr 22, 2011 8:48am
Wake Up Call
Survive the manual override
Unlocked: Apr 22, 2011 9:11am
You Monster
Reunite with GLaDOS
Unlocked: Apr 22, 2011 9:17am
Undiscouraged
Complete the first Thermal Discouragement Beam test
Unlocked: Apr 22, 2011 10:58am
Bridge Over Troubling Water
Complete the first Hard Light Bridge test
Unlocked: Apr 22, 2011 1:01pm
SaBOTour
Make a break for it
Unlocked: Apr 22, 2011 1:44pm
Stalemate Associate
Press the button!
Unlocked: Apr 22, 2011 6:28pm
Tater Tote
Carry science forward
Unlocked: Apr 22, 2011 5:55pm
Vertically Unchallenged
Master the Repulsion Gel
Unlocked: Apr 23, 2011 5:52am
Stranger Than Friction
Master the Propulsion Gel
Unlocked: Apr 23, 2011 6:35am
White Out
Complete the first Conversion Gel test
Unlocked: Apr 23, 2011 12:07pm
Tunnel of Funnel
Master the Excursion Funnel
Unlocked: Apr 23, 2011 7:12am
Dual Pit Experiment
Do the same test twice
Unlocked: Apr 23, 2011 12:57pm
The Part Where He Kills You
This is that part
Unlocked: Apr 23, 2011 1:52pm
Lunacy
That just happened
Unlocked: Apr 22, 2011 9:32am
Drop Box
Place a cube on a button without touching the cube
Unlocked: Apr 30, 2011 12:02pm
Pit Boss
Show that pit who's boss
Unlocked: May 9, 2011 2:23pm
Preservation of Mass
Break the rules in Test Chamber 07
Unlocked: May 10, 2011 4:48am
Pturretdactyl
Use an Aerial Faith Plate to launch a turret
Unlocked: May 9, 2011 2:46pm
Final Transmission
Find the hidden signal in one of the Rat Man's dens
Unlocked: Apr 22, 2011 1:02pm
Good Listener
Take GLaDOS' escape advice
Unlocked: Apr 22, 2011 1:26pm
Scanned Alone
Stand in a defective turret detector
Unlocked: May 8, 2011 5:27pm
No Hard Feelings
Save a turret from redemption
Unlocked: May 11, 2011 11:25am
Ship Overboard
Discover the missing experiment
Unlocked: May 9, 2011 2:27pm
You Made Your Point
Refuse to solve the first test in Chapter 8
Unlocked: Apr 22, 2011 10:37am
High Five
Celebrate your cooperative calibration success
Unlocked: Apr 24, 2011 6:03am
Team Building
Complete all test chambers in the Team Building co-op course
Unlocked: Apr 24, 2011 6:54am
Confidence Building
Complete all test chambers in the Mass and Velocity co-op course
Unlocked: Apr 24, 2011 9:38am
Bridge Building
Complete all test chambers in the Hard-Light Surfaces co-op course
Unlocked: May 18, 2011 2:50pm
Obstacle Building
Complete all test chambers in the Excursion Funnels co-op course
Unlocked: May 21, 2011 4:14pm
You Saved Science
Complete all test chambers in all courses of co-op
Unlocked: May 17, 2011 4:24pm
Gesticul-8
Perform all 8 gestures of your own volition in co-op
Unlocked: May 16, 2011 4:18pm
Can't Touch This
Dance in front of a turret blocked by a hard light bridge in co-op
Unlocked: Apr 24, 2011 5:05pm
Air Show
Perform 2 aerial gestures before touching the ground in co-op
Unlocked: May 21, 2011 4:12pm
Asking for Trouble
Taunt GLaDOS in front of a camera in each of the five co-op courses
Unlocked: May 15, 2011 1:04pm
Rock Portal Scissors
Win 3 co-op games of rock-paper-scissors in a row
Overclocker
Complete Test Chamber 10 in 70 seconds
Schrodinger's Catch
Catch a blue-painted box before it touches the ground
Door Prize
Examine all the vitrified test chamber doors
Portrait of a Lady
Find a hidden portrait
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
Professor Portal
After completing co-op, complete Calibration Course online with a friend who hasn’t played before
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
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
