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51 of 51 (100%) Achievements Earned::

Personal Achievements
 

Wake Up Call

Survive the manual override
Unlocked 19 Apr, 2011 @ 4:10am

You Monster

Reunite with GLaDOS
Unlocked 19 Apr, 2011 @ 4:31am

Undiscouraged

Complete the first Thermal Discouragement Beam test
Unlocked 19 Apr, 2011 @ 4:36am

Bridge Over Troubling Water

Complete the first Hard Light Bridge test
Unlocked 19 Apr, 2011 @ 5:29am

SaBOTour

Make a break for it
Unlocked 19 Apr, 2011 @ 6:37am

Stalemate Associate

Press the button!
Unlocked 19 Apr, 2011 @ 7:06am

Tater Tote

Carry science forward
Unlocked 19 Apr, 2011 @ 4:37pm

Vertically Unchallenged

Master the Repulsion Gel
Unlocked 19 Apr, 2011 @ 4:04pm

Stranger Than Friction

Master the Propulsion Gel
Unlocked 20 Apr, 2011 @ 8:37am

White Out

Complete the first Conversion Gel test
Unlocked 20 Apr, 2011 @ 8:49am

Tunnel of Funnel

Master the Excursion Funnel
Unlocked 21 Apr, 2011 @ 3:49pm

Dual Pit Experiment

Do the same test twice
Unlocked 20 Apr, 2011 @ 9:59am

The Part Where He Kills You

This is that part
Unlocked 22 Apr, 2011 @ 4:28pm

Lunacy

That just happened
Unlocked 22 Apr, 2011 @ 5:06pm

Drop Box

Place a cube on a button without touching the cube
Unlocked 22 Apr, 2011 @ 6:55pm

Overclocker

Complete Test Chamber 10 in 70 seconds
Unlocked 23 Apr, 2011 @ 5:57am

Pit Boss

Show that pit who's boss
Unlocked 22 Apr, 2011 @ 7:00pm

Preservation of Mass

Break the rules in Test Chamber 07
Unlocked 22 Apr, 2011 @ 7:30pm

Pturretdactyl

Use an Aerial Faith Plate to launch a turret
Unlocked 23 Apr, 2011 @ 3:52am

Final Transmission

Find the hidden signal in one of the Rat Man's dens
Unlocked 22 Apr, 2011 @ 5:56pm

Good Listener

Take GLaDOS' escape advice
Unlocked 19 Apr, 2011 @ 6:38am

Scanned Alone

Stand in a defective turret detector
Unlocked 19 Apr, 2011 @ 6:54am

No Hard Feelings

Save a turret from redemption
Unlocked 22 Apr, 2011 @ 6:07pm

Schrodinger's Catch

Catch a blue-painted box before it touches the ground
Unlocked 23 Apr, 2011 @ 4:20am

Ship Overboard

Discover the missing experiment
Unlocked 22 Apr, 2011 @ 6:45pm

Door Prize

Examine all the vitrified test chamber doors
Unlocked 22 Apr, 2011 @ 6:45pm

Portrait of a Lady

Find a hidden portrait
Unlocked 23 Apr, 2011 @ 3:39am

You Made Your Point

Refuse to solve the first test in Chapter 8
Unlocked 23 Apr, 2011 @ 4:28am

Smash TV

Break 11 test chamber monitors
Unlocked 3 May, 2011 @ 9:29am

High Five

Celebrate your cooperative calibration success
Unlocked 19 Apr, 2011 @ 7:23am

Team Building

Complete all test chambers in the Team Building co-op course
Unlocked 19 Apr, 2011 @ 9:46am

Confidence Building

Complete all test chambers in the Mass and Velocity co-op course
Unlocked 19 Apr, 2011 @ 12:03pm

Bridge Building

Complete all test chambers in the Hard-Light Surfaces co-op course
Unlocked 19 Apr, 2011 @ 2:39pm

Obstacle Building

Complete all test chambers in the Excursion Funnels co-op course
Unlocked 21 Apr, 2011 @ 5:51am

You Saved Science

Complete all test chambers in all courses of co-op
Unlocked 21 Apr, 2011 @ 11:14am

Iron Grip

Never lose a cube in Chamber 6 of the Mass and Velocity co-op course
Unlocked 10 May, 2011 @ 10:06am

Gesticul-8

Perform all 8 gestures of your own volition in co-op
Unlocked 19 Apr, 2011 @ 5:44pm

Can't Touch This

Dance in front of a turret blocked by a hard light bridge in co-op
Unlocked 27 Apr, 2011 @ 1:31pm

Empty Gesture

Drop your co-op partner in goo while they are gesturing by removing the bridge under them
Unlocked 27 Apr, 2011 @ 1:46pm

Party of Three

Find the hidden companion cube in co-op test chamber
Unlocked 27 Apr, 2011 @ 1:37pm

Narbacular Drop

Place a portal under your co-op partner while they are gesturing
Unlocked 27 Apr, 2011 @ 1:37pm

Professor Portal

After completing co-op, complete Calibration Course online with a friend who hasn’t played before
Unlocked 25 Nov, 2011 @ 8:00am

Air Show

Perform 2 aerial gestures before touching the ground in co-op
Unlocked 19 Apr, 2011 @ 9:51am

Portal Conservation Society

Complete Chamber 3 in the Hard-Light Surfaces co-op course using only 5 total portal placements
Unlocked 27 Apr, 2011 @ 2:22pm

Four Ring Circus

Enter 4 different portals without touching the ground in co-op
Unlocked 28 Apr, 2011 @ 11:49am

Triple Crown

Solve 3 co-op chambers in the Mass and Velocity course in under 60 seconds each
Unlocked 10 May, 2011 @ 6:40am

Still Alive

Complete Course 4 with neither you nor your co-op partner dying
Unlocked 10 May, 2011 @ 9:56am

Asking for Trouble

Taunt GLaDOS in front of a camera in each of the five co-op courses
Unlocked 27 Apr, 2011 @ 2:09pm

Rock Portal Scissors

Win 3 co-op games of rock-paper-scissors in a row
Unlocked 21 Apr, 2011 @ 11:21am

Friends List With Benefits

While playing co-op, hug 3 different people on your friends list
Unlocked 6 Aug, 2013 @ 3:21am

Talent Show

Never lose a cube in Chamber 6 of the Mobility Gels co-op course
Unlocked 6 Aug, 2013 @ 3:23am