Portal 2
Cosmic's Progress
Wake Up Call
Survive the manual override
Unlocked 1 Jun 2012 at 8:30 PM
You Monster
Reunite with GLaDOS
Unlocked 1 Jun 2012 at 8:53 PM
Undiscouraged
Complete the first Thermal Discouragement Beam test
Unlocked 2 Jun 2012 at 3:41 PM
Bridge Over Troubling Water
Complete the first Hard Light Bridge test
Unlocked 12 Jun 2012 at 8:26 PM
SaBOTour
Make a break for it
Unlocked 14 Jan 2013 at 3:43 PM
Stalemate Associate
Press the button!
Unlocked 14 Jan 2013 at 4:16 PM
Tater Tote
Carry science forward
Unlocked 8 Sep 2013 at 6:32 PM
Vertically Unchallenged
Master the Repulsion Gel
Unlocked 8 Sep 2013 at 6:05 PM
Stranger Than Friction
Master the Propulsion Gel
Unlocked 9 Nov 2013 at 8:23 AM
White Out
Complete the first Conversion Gel test
Unlocked 9 Nov 2013 at 8:23 AM
Tunnel of Funnel
Master the Excursion Funnel
Unlocked 9 Nov 2013 at 8:23 AM
Dual Pit Experiment
Do the same test twice
Unlocked 9 Nov 2013 at 8:23 AM
The Part Where He Kills You
This is that part
Unlocked 9 Nov 2013 at 8:23 AM
Lunacy
That just happened
Unlocked 9 Nov 2013 at 8:23 AM
Drop Box
Place a cube on a button without touching the cube
Unlocked 9 Nov 2013 at 8:23 AM
Overclocker
Complete Test Chamber 10 in 70 seconds
Unlocked 9 Nov 2013 at 8:23 AM
Pit Boss
Show that pit who's boss
Unlocked 9 Nov 2013 at 8:23 AM
Preservation of Mass
Break the rules in Test Chamber 07
Unlocked 9 Nov 2013 at 8:23 AM
Pturretdactyl
Use an Aerial Faith Plate to launch a turret
Unlocked 30 Aug 2013 at 6:35 AM
Final Transmission
Find the hidden signal in one of the Rat Man's dens
Unlocked 9 Nov 2013 at 8:23 AM
Good Listener
Take GLaDOS' escape advice
Unlocked 9 Nov 2013 at 8:23 AM
Scanned Alone
Stand in a defective turret detector
Unlocked 14 Jan 2013 at 3:57 PM
No Hard Feelings
Save a turret from redemption
Unlocked 14 Jan 2013 at 3:53 PM
Schrodinger's Catch
Catch a blue-painted box before it touches the ground
Unlocked 9 Nov 2013 at 8:23 AM
Ship Overboard
Discover the missing experiment
Unlocked 9 Nov 2013 at 8:23 AM
Door Prize
Examine all the vitrified test chamber doors
Unlocked 9 Nov 2013 at 8:23 AM
Portrait of a Lady
Find a hidden portrait
Unlocked 9 Nov 2013 at 8:23 AM
You Made Your Point
Refuse to solve the first test in Chapter 8
Unlocked 9 Nov 2013 at 8:23 AM
Smash TV
Break 11 test chamber monitors
Unlocked 9 Nov 2013 at 8:23 AM
High Five
Celebrate your cooperative calibration success
Unlocked 4 Jun 2012 at 1:16 AM
Team Building
Complete all test chambers in the Team Building co-op course
Unlocked 7 Dec 2012 at 11:54 PM
Confidence Building
Complete all test chambers in the Mass and Velocity co-op course
Unlocked 25 Jan 2013 at 10:13 PM
Bridge Building
Complete all test chambers in the Hard-Light Surfaces co-op course
Unlocked 9 Nov 2013 at 8:23 AM
Obstacle Building
Complete all test chambers in the Excursion Funnels co-op course
Unlocked 9 Nov 2013 at 8:23 AM
You Saved Science
Complete all test chambers in all courses of co-op
Unlocked 9 Nov 2013 at 8:23 AM
Iron Grip
Never lose a cube in Chamber 6 of the Mass and Velocity co-op course
Unlocked 9 Nov 2013 at 8:23 AM
Gesticul-8
Perform all 8 gestures of your own volition in co-op
Unlocked 9 Nov 2013 at 8:23 AM
Can't Touch This
Dance in front of a turret blocked by a hard light bridge in co-op
Unlocked 4 Jun 2012 at 8:51 PM
Empty Gesture
Drop your co-op partner in goo while they are gesturing by removing the bridge under them
Unlocked 9 Nov 2013 at 8:23 AM
Party of Three
Find the hidden companion cube in co-op test chamber
Unlocked 9 Nov 2013 at 8:23 AM
Narbacular Drop
Place a portal under your co-op partner while they are gesturing
Unlocked 9 Nov 2013 at 8:23 AM
Professor Portal
After completing co-op, complete Calibration Course online with a friend who hasn’t played before
Unlocked 9 Nov 2013 at 8:23 AM
Air Show
Perform 2 aerial gestures before touching the ground in co-op
Unlocked 4 Jun 2012 at 1:30 AM
Portal Conservation Society
Complete Chamber 3 in the Hard-Light Surfaces co-op course using only 5 total portal placements
Unlocked 9 Nov 2013 at 8:23 AM
Four Ring Circus
Enter 4 different portals without touching the ground in co-op
Unlocked 9 Nov 2013 at 8:23 AM
Triple Crown
Solve 3 co-op chambers in the Mass and Velocity course in under 60 seconds each
Unlocked 9 Nov 2013 at 8:23 AM
Still Alive
Complete Course 4 with neither you nor your co-op partner dying
Unlocked 9 Nov 2013 at 8:23 AM
Asking for Trouble
Taunt GLaDOS in front of a camera in each of the five co-op courses
Unlocked 9 Nov 2013 at 8:23 AM
Rock Portal Scissors
Win 3 co-op games of rock-paper-scissors in a row
Unlocked 28 Jun 2012 at 7:33 PM
Friends List With Benefits
While playing co-op, hug 3 different people on your friends list
Unlocked 9 Nov 2013 at 8:23 AM
Talent Show
Never lose a cube in Chamber 6 of the Mobility Gels co-op course
Unlocked 9 Nov 2013 at 8:23 AM