Portal 2
Harris's Progress
Wake Up Call
Survive the manual override
Unlocked 19 Apr 2011 at 8:15 PM
You Monster
Reunite with GLaDOS
Unlocked 19 Apr 2011 at 8:37 PM
Undiscouraged
Complete the first Thermal Discouragement Beam test
Unlocked 19 Apr 2011 at 8:42 PM
Bridge Over Troubling Water
Complete the first Hard Light Bridge test
Unlocked 19 Apr 2011 at 9:22 PM
SaBOTour
Make a break for it
Unlocked 19 Apr 2011 at 10:18 PM
Stalemate Associate
Press the button!
Unlocked 19 Apr 2011 at 10:47 PM
Tater Tote
Carry science forward
Unlocked 20 Apr 2011 at 12:14 AM
Vertically Unchallenged
Master the Repulsion Gel
Unlocked 19 Apr 2011 at 11:19 PM
Stranger Than Friction
Master the Propulsion Gel
Unlocked 20 Apr 2011 at 12:34 AM
White Out
Complete the first Conversion Gel test
Unlocked 20 Apr 2011 at 12:54 AM
Tunnel of Funnel
Master the Excursion Funnel
Unlocked 20 Apr 2011 at 2:55 AM
Dual Pit Experiment
Do the same test twice
Unlocked 20 Apr 2011 at 1:34 AM
The Part Where He Kills You
This is that part
Unlocked 20 Apr 2011 at 3:18 AM
Lunacy
That just happened
Unlocked 20 Apr 2011 at 3:47 AM
Drop Box
Place a cube on a button without touching the cube
Unlocked 10 May 2012 at 11:38 PM
Overclocker
Complete Test Chamber 10 in 70 seconds
Pit Boss
Show that pit who's boss
Unlocked 2 Oct 2011 at 3:32 AM
Preservation of Mass
Break the rules in Test Chamber 07
Unlocked 19 Apr 2011 at 9:03 PM
Pturretdactyl
Use an Aerial Faith Plate to launch a turret
Final Transmission
Find the hidden signal in one of the Rat Man's dens
Unlocked 30 Apr 2011 at 12:02 AM
Good Listener
Take GLaDOS' escape advice
Unlocked 1 May 2011 at 4:42 PM
Scanned Alone
Stand in a defective turret detector
Unlocked 19 Apr 2011 at 10:32 PM
No Hard Feelings
Save a turret from redemption
Unlocked 19 Apr 2011 at 10:28 PM
Schrodinger's Catch
Catch a blue-painted box before it touches the ground
Ship Overboard
Discover the missing experiment
Unlocked 19 Apr 2011 at 11:46 PM
Door Prize
Examine all the vitrified test chamber doors
Unlocked 19 Apr 2011 at 11:46 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 20 Apr 2011 at 8:28 PM
Team Building
Complete all test chambers in the Team Building co-op course
Unlocked 21 Apr 2011 at 2:14 AM
Confidence Building
Complete all test chambers in the Mass and Velocity co-op course
Unlocked 17 Jul 2011 at 8:28 PM
Bridge Building
Complete all test chambers in the Hard-Light Surfaces co-op course
Unlocked 22 Apr 2011 at 5:32 PM
Obstacle Building
Complete all test chambers in the Excursion Funnels co-op course
You Saved Science
Complete all test chambers in all courses of co-op
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
Can't Touch This
Dance in front of a turret blocked by a hard light bridge in co-op
Unlocked 22 Apr 2011 at 5:13 PM
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
Air Show
Perform 2 aerial gestures before touching the ground in co-op
Unlocked 4 Oct 2011 at 8:58 PM
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
Unlocked 22 Apr 2011 at 4:58 PM
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
Unlocked 4 Oct 2011 at 8:55 PM
Talent Show
Never lose a cube in Chamber 6 of the Mobility Gels co-op course