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51 of 51 (100%) Achievements Earned::

Personal Achievements
 

Wake Up Call

Survive the manual override
Unlocked 27 Jun, 2017 @ 7:07pm

You Monster

Reunite with GLaDOS
Unlocked 27 Jun, 2017 @ 7:07pm

Undiscouraged

Complete the first Thermal Discouragement Beam test
Unlocked 27 Jun, 2017 @ 7:12pm

Bridge Over Troubling Water

Complete the first Hard Light Bridge test
Unlocked 28 Jun, 2017 @ 3:39pm

SaBOTour

Make a break for it
Unlocked 30 Jun, 2017 @ 12:33pm

Stalemate Associate

Press the button!
Unlocked 30 Jun, 2017 @ 3:26pm

Tater Tote

Carry science forward
Unlocked 4 Aug, 2017 @ 8:10am

Vertically Unchallenged

Master the Repulsion Gel
Unlocked 2 Aug, 2017 @ 5:58am

Stranger Than Friction

Master the Propulsion Gel
Unlocked 4 Aug, 2017 @ 8:36am

White Out

Complete the first Conversion Gel test
Unlocked 5 Aug, 2017 @ 10:17am

Tunnel of Funnel

Master the Excursion Funnel
Unlocked 5 Aug, 2017 @ 12:04pm

Dual Pit Experiment

Do the same test twice
Unlocked 5 Aug, 2017 @ 11:11am

The Part Where He Kills You

This is that part
Unlocked 6 Aug, 2017 @ 7:48am

Lunacy

That just happened
Unlocked 6 Aug, 2017 @ 8:34am

Drop Box

Place a cube on a button without touching the cube
Unlocked 9 Sep, 2017 @ 10:38am

Overclocker

Complete Test Chamber 10 in 70 seconds
Unlocked 28 Jun, 2019 @ 5:56pm

Pit Boss

Show that pit who's boss
Unlocked 26 Oct, 2017 @ 2:09pm

Preservation of Mass

Break the rules in Test Chamber 07
Unlocked 27 Jun, 2017 @ 7:30pm

Pturretdactyl

Use an Aerial Faith Plate to launch a turret
Unlocked 25 Dec, 2017 @ 3:30pm

Final Transmission

Find the hidden signal in one of the Rat Man's dens
Unlocked 28 Jun, 2019 @ 5:38pm

Good Listener

Take GLaDOS' escape advice
Unlocked 10 Sep, 2017 @ 10:42am

Scanned Alone

Stand in a defective turret detector
Unlocked 28 Dec, 2017 @ 6:24pm

No Hard Feelings

Save a turret from redemption
Unlocked 30 Jun, 2017 @ 3:26pm

Schrodinger's Catch

Catch a blue-painted box before it touches the ground
Unlocked 29 Dec, 2017 @ 12:00pm

Ship Overboard

Discover the missing experiment
Unlocked 29 Dec, 2017 @ 12:04pm

Door Prize

Examine all the vitrified test chamber doors
Unlocked 31 Aug, 2019 @ 6:47pm

Portrait of a Lady

Find a hidden portrait
Unlocked 29 Dec, 2017 @ 12:23pm

You Made Your Point

Refuse to solve the first test in Chapter 8
Unlocked 26 Oct, 2017 @ 2:09pm

Smash TV

Break 11 test chamber monitors
Unlocked 7 Sep, 2019 @ 8:58am

High Five

Celebrate your cooperative calibration success
Unlocked 27 Jun, 2017 @ 11:36am

Team Building

Complete all test chambers in the Team Building co-op course
Unlocked 2 Aug, 2017 @ 8:07am

Confidence Building

Complete all test chambers in the Mass and Velocity co-op course
Unlocked 2 Aug, 2017 @ 9:06am

Bridge Building

Complete all test chambers in the Hard-Light Surfaces co-op course
Unlocked 2 Aug, 2017 @ 1:58pm

Obstacle Building

Complete all test chambers in the Excursion Funnels co-op course
Unlocked 12 Oct, 2017 @ 11:54am

You Saved Science

Complete all test chambers in all courses of co-op
Unlocked 12 Oct, 2017 @ 1:44pm

Iron Grip

Never lose a cube in Chamber 6 of the Mass and Velocity co-op course
Unlocked 5 Sep, 2019 @ 9:14pm

Gesticul-8

Perform all 8 gestures of your own volition in co-op
Unlocked 17 Sep, 2017 @ 2:10pm

Can't Touch This

Dance in front of a turret blocked by a hard light bridge in co-op
Unlocked 12 Oct, 2017 @ 11:44am

Empty Gesture

Drop your co-op partner in goo while they are gesturing by removing the bridge under them
Unlocked 28 Aug, 2019 @ 7:33pm

Party of Three

Find the hidden companion cube in co-op test chamber
Unlocked 30 Aug, 2019 @ 5:25pm

Narbacular Drop

Place a portal under your co-op partner while they are gesturing
Unlocked 25 Dec, 2017 @ 3:29pm

Professor Portal

After completing co-op, complete Calibration Course online with a friend who hasn’t played before
Unlocked 17 Oct, 2017 @ 8:09am

Air Show

Perform 2 aerial gestures before touching the ground in co-op
Unlocked 17 Sep, 2017 @ 2:03pm

Portal Conservation Society

Complete Chamber 3 in the Hard-Light Surfaces co-op course using only 5 total portal placements
Unlocked 5 Sep, 2019 @ 8:47pm

Four Ring Circus

Enter 4 different portals without touching the ground in co-op
Unlocked 12 Oct, 2017 @ 1:05pm

Triple Crown

Solve 3 co-op chambers in the Mass and Velocity course in under 60 seconds each
Unlocked 6 Sep, 2019 @ 4:48pm

Still Alive

Complete Course 4 with neither you nor your co-op partner dying
Unlocked 8 Dec, 2019 @ 4:35pm

Asking for Trouble

Taunt GLaDOS in front of a camera in each of the five co-op courses
Unlocked 12 Oct, 2017 @ 1:42pm

Rock Portal Scissors

Win 3 co-op games of rock-paper-scissors in a row
Unlocked 28 Jun, 2019 @ 5:26pm

Friends List With Benefits

While playing co-op, hug 3 different people on your friends list
Unlocked 17 Sep, 2017 @ 3:21pm

Talent Show

Never lose a cube in Chamber 6 of the Mobility Gels co-op course
Unlocked 5 Sep, 2019 @ 8:31pm