Achievement Unlocked Visibility Global Unlocks
Talent Show
Never lose a cube in Chamber 6 of the Mobility Gels co-op course 		2011-07-10 01:06:35 2.6%
Professor Portal
After completing co-op, complete Calibration Course online with a friend who hasn’t played before 		2011-05-07 10:17:35 5.8%
Friends List With Benefits
While playing co-op, hug 3 different people on your friends list 		2011-04-26 12:41:56 4.4%
Party of Three
Find the hidden companion cube in co-op test chamber 		2011-04-24 22:46:41 3.6%
Triple Crown
Solve 3 co-op chambers in the Mass and Velocity course in under 60 seconds each 		2011-04-24 22:39:28 3.0%
Empty Gesture
Drop your co-op partner in goo while they are gesturing by removing the bridge under them 		2011-04-24 22:31:01 4.6%
Portal Conservation Society
Complete Chamber 3 in the Hard-Light Surfaces co-op course using only 5 total portal placements 		2011-04-24 22:30:20 2.7%
Four Ring Circus
Enter 4 different portals without touching the ground in co-op 		2011-04-24 22:13:12 6.9%
Still Alive
Complete Course 4 with neither you nor your co-op partner dying 		2011-04-24 22:06:58 2.4%
Iron Grip
Never lose a cube in Chamber 6 of the Mass and Velocity co-op course 		2011-04-24 20:07:57 3.6%
You Saved Science
Complete all test chambers in all courses of co-op 		2011-04-24 13:08:28 21.3%
Asking for Trouble
Taunt GLaDOS in front of a camera in each of the five co-op courses 		2011-04-24 12:09:12 9.1%
Obstacle Building
Complete all test chambers in the Excursion Funnels co-op course 		2011-04-23 14:25:47 26.4%
Gesticul-8
Perform all 8 gestures of your own volition in co-op 		2011-04-23 13:51:26 27.3%
Bridge Building
Complete all test chambers in the Hard-Light Surfaces co-op course 		2011-04-23 13:24:16 32.2%
Rock Portal Scissors
Win 3 co-op games of rock-paper-scissors in a row 		2011-04-23 12:31:07 9.9%
Can't Touch This
Dance in front of a turret blocked by a hard light bridge in co-op 		2011-04-23 12:25:49 10.0%
Narbacular Drop
Place a portal under your co-op partner while they are gesturing 		2011-04-23 11:47:51 5.9%
Smash TV
Break 11 test chamber monitors 		2011-04-22 22:53:48 3.7%
Good Listener
Take GLaDOS' escape advice 		2011-04-22 21:50:22 29.3%
Overclocker
Complete Test Chamber 10 in 70 seconds 		2011-04-22 21:34:34 4.0%
Ship Overboard
Discover the missing experiment 		2011-04-22 21:17:44 11.0%
Door Prize
Examine all the vitrified test chamber doors 		2011-04-22 21:17:26 7.5%
Schrodinger's Catch
Catch a blue-painted box before it touches the ground 		2011-04-22 21:12:23 7.0%
Final Transmission
Find the hidden signal in one of the Rat Man's dens 		2011-04-22 20:14:24 5.7%
Pturretdactyl
Use an Aerial Faith Plate to launch a turret 		2011-04-22 20:10:24 9.1%
Drop Box
Place a cube on a button without touching the cube 		2011-04-22 20:09:44 29.7%
Pit Boss
Show that pit who's boss 		2011-04-22 19:40:19 8.0%
You Made Your Point
Refuse to solve the first test in Chapter 8 		2011-04-22 19:30:40 6.8%
Confidence Building
Complete all test chambers in the Mass and Velocity co-op course 		2011-04-22 04:14:17 41.1%
Lunacy
That just happened 		2011-04-22 02:40:39 35.3%
The Part Where He Kills You
This is that part 		2011-04-22 01:59:00 35.6%
Air Show
Perform 2 aerial gestures before touching the ground in co-op 		2011-04-21 11:27:44 33.9%
Team Building
Complete all test chambers in the Team Building co-op course 		2011-04-21 11:14:42 49.6%
High Five
Celebrate your cooperative calibration success 		2011-04-21 10:52:22 58.8%
Tunnel of Funnel
Master the Excursion Funnel 		2011-04-20 03:19:42 36.4%
Dual Pit Experiment
Do the same test twice 		2011-04-20 01:34:05 38.3%
White Out
Complete the first Conversion Gel test 		2011-04-20 00:47:03 39.7%
Stranger Than Friction
Master the Propulsion Gel 		2011-04-20 00:10:06 40.8%
Portrait of a Lady
Find a hidden portrait 		2011-04-19 17:22:40 12.1%
Tater Tote
Carry science forward 		2011-04-19 16:50:35 42.4%
Vertically Unchallenged
Master the Repulsion Gel 		2011-04-19 16:00:03 44.4%
Stalemate Associate
Press the button! 		2011-04-19 15:22:23 47.2%
Scanned Alone
Stand in a defective turret detector 		2011-04-19 15:06:22 35.9%
No Hard Feelings
Save a turret from redemption 		2011-04-19 15:02:56 31.9%
SaBOTour
Make a break for it 		2011-04-19 14:52:24 48.1%
Bridge Over Troubling Water
Complete the first Hard Light Bridge test 		2011-04-19 14:14:26 55.1%
Preservation of Mass
Break the rules in Test Chamber 07 		2011-04-19 13:51:10 25.1%
Undiscouraged
Complete the first Thermal Discouragement Beam test 		2011-04-19 13:36:47 64.6%
You Monster
Reunite with GLaDOS 		2011-04-19 13:33:11 66.7%
Wake Up Call
Survive the manual override 		2011-04-19 13:13:58 75.9%