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51 of 51 (100%) Achievements Earned::

Personal Achievements
 

Wake Up Call

Survive the manual override
Unlocked 19 Nov, 2012 @ 7:42am

You Monster

Reunite with GLaDOS
Unlocked 19 Nov, 2012 @ 8:05am

Undiscouraged

Complete the first Thermal Discouragement Beam test
Unlocked 19 Nov, 2012 @ 8:09am

Bridge Over Troubling Water

Complete the first Hard Light Bridge test
Unlocked 27 Nov, 2012 @ 8:17am

SaBOTour

Make a break for it
Unlocked 27 Nov, 2012 @ 8:17am

Stalemate Associate

Press the button!
Unlocked 27 Nov, 2012 @ 8:17am

Tater Tote

Carry science forward
Unlocked 27 Nov, 2012 @ 8:17am

Vertically Unchallenged

Master the Repulsion Gel
Unlocked 27 Nov, 2012 @ 8:17am

Stranger Than Friction

Master the Propulsion Gel
Unlocked 27 Nov, 2012 @ 8:17am

White Out

Complete the first Conversion Gel test
Unlocked 27 Nov, 2012 @ 8:17am

Tunnel of Funnel

Master the Excursion Funnel
Unlocked 27 Nov, 2012 @ 8:17am

Dual Pit Experiment

Do the same test twice
Unlocked 27 Nov, 2012 @ 8:17am

The Part Where He Kills You

This is that part
Unlocked 27 Nov, 2012 @ 8:17am

Lunacy

That just happened
Unlocked 27 Nov, 2012 @ 8:17am

Drop Box

Place a cube on a button without touching the cube
Unlocked 4 Aug, 2020 @ 8:42am

Overclocker

Complete Test Chamber 10 in 70 seconds
Unlocked 27 Dec, 2020 @ 12:20pm

Pit Boss

Show that pit who's boss
Unlocked 29 Dec, 2020 @ 4:42am

Preservation of Mass

Break the rules in Test Chamber 07
Unlocked 27 Nov, 2012 @ 8:17am

Pturretdactyl

Use an Aerial Faith Plate to launch a turret
Unlocked 27 Dec, 2020 @ 11:15am

Final Transmission

Find the hidden signal in one of the Rat Man's dens
Unlocked 27 Dec, 2020 @ 11:14am

Good Listener

Take GLaDOS' escape advice
Unlocked 27 Nov, 2012 @ 8:17am

Scanned Alone

Stand in a defective turret detector
Unlocked 9 Feb, 2014 @ 9:45am

No Hard Feelings

Save a turret from redemption
Unlocked 24 Aug, 2013 @ 4:24am

Schrodinger's Catch

Catch a blue-painted box before it touches the ground
Unlocked 29 Dec, 2020 @ 2:53am

Ship Overboard

Discover the missing experiment
Unlocked 29 Dec, 2020 @ 2:59am

Door Prize

Examine all the vitrified test chamber doors
Unlocked 29 Dec, 2020 @ 2:59am

Portrait of a Lady

Find a hidden portrait
Unlocked 14 Feb, 2014 @ 6:04am

You Made Your Point

Refuse to solve the first test in Chapter 8
Unlocked 29 Dec, 2020 @ 4:47am

Smash TV

Break 11 test chamber monitors
Unlocked 29 Dec, 2020 @ 4:38am

High Five

Celebrate your cooperative calibration success
Unlocked 27 Nov, 2012 @ 8:29am

Team Building

Complete all test chambers in the Team Building co-op course
Unlocked 27 Nov, 2012 @ 8:50am

Confidence Building

Complete all test chambers in the Mass and Velocity co-op course
Unlocked 27 Nov, 2012 @ 9:46am

Bridge Building

Complete all test chambers in the Hard-Light Surfaces co-op course
Unlocked 19 Feb, 2013 @ 8:15am

Obstacle Building

Complete all test chambers in the Excursion Funnels co-op course
Unlocked 19 Nov, 2016 @ 12:59pm

You Saved Science

Complete all test chambers in all courses of co-op
Unlocked 19 Nov, 2016 @ 2:06pm

Iron Grip

Never lose a cube in Chamber 6 of the Mass and Velocity co-op course
Unlocked 25 Aug @ 8:36am

Gesticul-8

Perform all 8 gestures of your own volition in co-op
Unlocked 20 Feb, 2013 @ 9:22am

Can't Touch This

Dance in front of a turret blocked by a hard light bridge in co-op
Unlocked 25 Aug @ 8:16am

Empty Gesture

Drop your co-op partner in goo while they are gesturing by removing the bridge under them
Unlocked 25 Aug @ 12:21pm

Party of Three

Find the hidden companion cube in co-op test chamber
Unlocked 25 Aug @ 8:28am

Narbacular Drop

Place a portal under your co-op partner while they are gesturing
Unlocked 25 Aug @ 8:13am

Professor Portal

After completing co-op, complete Calibration Course online with a friend who hasn’t played before
Unlocked 9 Jun, 2018 @ 11:46am

Air Show

Perform 2 aerial gestures before touching the ground in co-op
Unlocked 20 Feb, 2013 @ 7:56am

Portal Conservation Society

Complete Chamber 3 in the Hard-Light Surfaces co-op course using only 5 total portal placements
Unlocked 25 Aug @ 12:35pm

Four Ring Circus

Enter 4 different portals without touching the ground in co-op
Unlocked 2 Nov @ 9:59am

Triple Crown

Solve 3 co-op chambers in the Mass and Velocity course in under 60 seconds each
Unlocked 1 Jun, 2021 @ 11:19am

Still Alive

Complete Course 4 with neither you nor your co-op partner dying
Unlocked 25 Aug @ 12:15pm

Asking for Trouble

Taunt GLaDOS in front of a camera in each of the five co-op courses
Unlocked 7 Sep, 2013 @ 12:56pm

Rock Portal Scissors

Win 3 co-op games of rock-paper-scissors in a row
Unlocked 25 Aug @ 8:10am

Friends List With Benefits

While playing co-op, hug 3 different people on your friends list
Unlocked 19 Nov, 2016 @ 10:16am

Talent Show

Never lose a cube in Chamber 6 of the Mobility Gels co-op course
Unlocked 2 Nov @ 10:09am