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51 of 51 (100%) Achievements Earned::

Personal Achievements
 

Wake Up Call

Survive the manual override
Unlocked 24 Dec, 2016 @ 2:54pm

You Monster

Reunite with GLaDOS
Unlocked 24 Dec, 2016 @ 3:45pm

Undiscouraged

Complete the first Thermal Discouragement Beam test
Unlocked 24 Dec, 2016 @ 6:21pm

Bridge Over Troubling Water

Complete the first Hard Light Bridge test
Unlocked 26 Dec, 2016 @ 10:47pm

SaBOTour

Make a break for it
Unlocked 17 Jan, 2017 @ 8:55pm

Stalemate Associate

Press the button!
Unlocked 17 Jan, 2017 @ 9:41pm

Tater Tote

Carry science forward
Unlocked 8 Mar, 2019 @ 1:09am

Vertically Unchallenged

Master the Repulsion Gel
Unlocked 21 Oct, 2017 @ 4:09pm

Stranger Than Friction

Master the Propulsion Gel
Unlocked 8 Mar, 2019 @ 11:04pm

White Out

Complete the first Conversion Gel test
Unlocked 9 Mar, 2019 @ 11:46pm

Tunnel of Funnel

Master the Excursion Funnel
Unlocked 23 Dec, 2019 @ 11:00am

Dual Pit Experiment

Do the same test twice
Unlocked 22 Mar, 2019 @ 12:49pm

The Part Where He Kills You

This is that part
Unlocked 19 Feb, 2017 @ 10:02am

Lunacy

That just happened
Unlocked 23 Dec, 2019 @ 11:00am

Drop Box

Place a cube on a button without touching the cube
Unlocked 1 Sep, 2017 @ 12:21pm

Overclocker

Complete Test Chamber 10 in 70 seconds
Unlocked 11 Oct, 2018 @ 7:09pm

Pit Boss

Show that pit who's boss
Unlocked 10 Jan, 2020 @ 11:24pm

Preservation of Mass

Break the rules in Test Chamber 07
Unlocked 11 Oct, 2018 @ 6:55pm

Pturretdactyl

Use an Aerial Faith Plate to launch a turret
Unlocked 1 Sep, 2017 @ 12:19pm

Final Transmission

Find the hidden signal in one of the Rat Man's dens
Unlocked 11 Oct, 2018 @ 7:18pm

Good Listener

Take GLaDOS' escape advice
Unlocked 17 Jan, 2017 @ 8:56pm

Scanned Alone

Stand in a defective turret detector
Unlocked 17 Jan, 2017 @ 9:10pm

No Hard Feelings

Save a turret from redemption
Unlocked 17 Jan, 2017 @ 9:07pm

Schrodinger's Catch

Catch a blue-painted box before it touches the ground
Unlocked 11 Oct, 2018 @ 8:07pm

Ship Overboard

Discover the missing experiment
Unlocked 11 Oct, 2018 @ 8:38pm

Door Prize

Examine all the vitrified test chamber doors
Unlocked 11 Oct, 2018 @ 8:37pm

Portrait of a Lady

Find a hidden portrait
Unlocked 10 Jan, 2020 @ 11:24pm

You Made Your Point

Refuse to solve the first test in Chapter 8
Unlocked 10 Jan, 2020 @ 3:18pm

Smash TV

Break 11 test chamber monitors
Unlocked 3 Jan, 2020 @ 6:11pm

High Five

Celebrate your cooperative calibration success
Unlocked 20 Jan, 2017 @ 10:32am

Team Building

Complete all test chambers in the Team Building co-op course
Unlocked 16 Sep, 2017 @ 12:08am

Confidence Building

Complete all test chambers in the Mass and Velocity co-op course
Unlocked 16 Sep, 2017 @ 12:29pm

Bridge Building

Complete all test chambers in the Hard-Light Surfaces co-op course
Unlocked 8 Sep, 2018 @ 3:04am

Obstacle Building

Complete all test chambers in the Excursion Funnels co-op course
Unlocked 28 Sep, 2018 @ 10:07pm

You Saved Science

Complete all test chambers in all courses of co-op
Unlocked 3 Jan, 2020 @ 6:11pm

Iron Grip

Never lose a cube in Chamber 6 of the Mass and Velocity co-op course
Unlocked 23 Dec, 2019 @ 11:00am

Gesticul-8

Perform all 8 gestures of your own volition in co-op
Unlocked 28 Sep, 2018 @ 9:09pm

Can't Touch This

Dance in front of a turret blocked by a hard light bridge in co-op
Unlocked 6 Jan, 2020 @ 12:57am

Empty Gesture

Drop your co-op partner in goo while they are gesturing by removing the bridge under them
Unlocked 10 Jan, 2020 @ 11:24pm

Party of Three

Find the hidden companion cube in co-op test chamber
Unlocked 10 Jan, 2020 @ 11:24pm

Narbacular Drop

Place a portal under your co-op partner while they are gesturing
Unlocked 10 Jan, 2020 @ 11:24pm

Professor Portal

After completing co-op, complete Calibration Course online with a friend who hasn’t played before
Unlocked 10 Jan, 2020 @ 11:24pm

Air Show

Perform 2 aerial gestures before touching the ground in co-op
Unlocked 20 Jan, 2017 @ 9:25pm

Portal Conservation Society

Complete Chamber 3 in the Hard-Light Surfaces co-op course using only 5 total portal placements
Unlocked 10 Jan, 2020 @ 11:24pm

Four Ring Circus

Enter 4 different portals without touching the ground in co-op
Unlocked 3 Jan, 2020 @ 6:10pm

Triple Crown

Solve 3 co-op chambers in the Mass and Velocity course in under 60 seconds each
Unlocked 23 Dec, 2019 @ 11:00am

Still Alive

Complete Course 4 with neither you nor your co-op partner dying
Unlocked 3 Jan, 2020 @ 6:11pm

Asking for Trouble

Taunt GLaDOS in front of a camera in each of the five co-op courses
Unlocked 23 Dec, 2019 @ 11:00am

Rock Portal Scissors

Win 3 co-op games of rock-paper-scissors in a row
Unlocked 20 Jan, 2017 @ 10:42am

Friends List With Benefits

While playing co-op, hug 3 different people on your friends list
Unlocked 3 Jan, 2020 @ 6:10pm

Talent Show

Never lose a cube in Chamber 6 of the Mobility Gels co-op course
Unlocked 10 Jan, 2020 @ 3:18pm