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51 of 51 (100%) Achievements Earned::

Personal Achievements
 

Wake Up Call

Survive the manual override
Unlocked 26 Dec, 2016 @ 3:00pm

You Monster

Reunite with GLaDOS
Unlocked 31 Dec, 2016 @ 2:17pm

Undiscouraged

Complete the first Thermal Discouragement Beam test
Unlocked 31 Dec, 2016 @ 2:20pm

Bridge Over Troubling Water

Complete the first Hard Light Bridge test
Unlocked 31 Dec, 2016 @ 2:50pm

SaBOTour

Make a break for it
Unlocked 31 Dec, 2016 @ 8:51pm

Stalemate Associate

Press the button!
Unlocked 1 Jan, 2017 @ 12:11pm

Tater Tote

Carry science forward
Unlocked 1 Jan, 2017 @ 1:11pm

Vertically Unchallenged

Master the Repulsion Gel
Unlocked 1 Jan, 2017 @ 12:50pm

Stranger Than Friction

Master the Propulsion Gel
Unlocked 1 Jan, 2017 @ 3:12pm

White Out

Complete the first Conversion Gel test
Unlocked 1 Jan, 2017 @ 4:17pm

Tunnel of Funnel

Master the Excursion Funnel
Unlocked 2 Jan, 2017 @ 12:27pm

Dual Pit Experiment

Do the same test twice
Unlocked 1 Jan, 2017 @ 4:50pm

The Part Where He Kills You

This is that part
Unlocked 2 Jan, 2017 @ 12:39pm

Lunacy

That just happened
Unlocked 2 Jan, 2017 @ 1:04pm

Drop Box

Place a cube on a button without touching the cube
Unlocked 26 Dec, 2016 @ 12:42pm

Overclocker

Complete Test Chamber 10 in 70 seconds
Unlocked 18 Feb, 2021 @ 7:57am

Pit Boss

Show that pit who's boss
Unlocked 2 Jan, 2017 @ 12:41pm

Preservation of Mass

Break the rules in Test Chamber 07
Unlocked 31 Dec, 2016 @ 2:36pm

Pturretdactyl

Use an Aerial Faith Plate to launch a turret
Unlocked 31 Dec, 2016 @ 8:22pm

Final Transmission

Find the hidden signal in one of the Rat Man's dens
Unlocked 20 Feb, 2021 @ 2:50pm

Good Listener

Take GLaDOS' escape advice
Unlocked 31 Dec, 2016 @ 8:51pm

Scanned Alone

Stand in a defective turret detector
Unlocked 1 Dec, 2017 @ 3:24pm

No Hard Feelings

Save a turret from redemption
Unlocked 31 Dec, 2016 @ 9:06pm

Schrodinger's Catch

Catch a blue-painted box before it touches the ground
Unlocked 20 Feb, 2021 @ 2:23pm

Ship Overboard

Discover the missing experiment
Unlocked 8 Dec, 2017 @ 7:58pm

Door Prize

Examine all the vitrified test chamber doors
Unlocked 3 Mar, 2021 @ 6:58pm

Portrait of a Lady

Find a hidden portrait
Unlocked 1 Dec, 2017 @ 3:29pm

You Made Your Point

Refuse to solve the first test in Chapter 8
Unlocked 9 Dec, 2017 @ 11:11am

Smash TV

Break 11 test chamber monitors
Unlocked 3 Mar, 2021 @ 6:03pm

High Five

Celebrate your cooperative calibration success
Unlocked 24 Dec, 2016 @ 9:56pm

Team Building

Complete all test chambers in the Team Building co-op course
Unlocked 25 Dec, 2016 @ 11:53am

Confidence Building

Complete all test chambers in the Mass and Velocity co-op course
Unlocked 25 Dec, 2016 @ 7:28pm

Bridge Building

Complete all test chambers in the Hard-Light Surfaces co-op course
Unlocked 27 Dec, 2016 @ 5:32pm

Obstacle Building

Complete all test chambers in the Excursion Funnels co-op course
Unlocked 17 Jan, 2017 @ 5:08pm

You Saved Science

Complete all test chambers in all courses of co-op
Unlocked 30 Nov, 2017 @ 5:51pm

Iron Grip

Never lose a cube in Chamber 6 of the Mass and Velocity co-op course
Unlocked 8 Feb, 2021 @ 8:23pm

Gesticul-8

Perform all 8 gestures of your own volition in co-op
Unlocked 27 Dec, 2016 @ 6:16pm

Can't Touch This

Dance in front of a turret blocked by a hard light bridge in co-op
Unlocked 23 Feb, 2021 @ 10:02pm

Empty Gesture

Drop your co-op partner in goo while they are gesturing by removing the bridge under them
Unlocked 26 Feb, 2021 @ 6:51pm

Party of Three

Find the hidden companion cube in co-op test chamber
Unlocked 17 Jan, 2017 @ 5:05pm

Narbacular Drop

Place a portal under your co-op partner while they are gesturing
Unlocked 2 Mar, 2021 @ 3:19pm

Professor Portal

After completing co-op, complete Calibration Course online with a friend who hasn’t played before
Unlocked 24 Jul, 2020 @ 7:47pm

Air Show

Perform 2 aerial gestures before touching the ground in co-op
Unlocked 25 Dec, 2016 @ 12:00pm

Portal Conservation Society

Complete Chamber 3 in the Hard-Light Surfaces co-op course using only 5 total portal placements
Unlocked 1 Feb, 2021 @ 3:02pm

Four Ring Circus

Enter 4 different portals without touching the ground in co-op
Unlocked 2 Mar, 2021 @ 3:24pm

Triple Crown

Solve 3 co-op chambers in the Mass and Velocity course in under 60 seconds each
Unlocked 13 Feb, 2021 @ 1:14pm

Still Alive

Complete Course 4 with neither you nor your co-op partner dying
Unlocked 2 Mar, 2021 @ 3:48pm

Asking for Trouble

Taunt GLaDOS in front of a camera in each of the five co-op courses
Unlocked 30 Nov, 2017 @ 5:49pm

Rock Portal Scissors

Win 3 co-op games of rock-paper-scissors in a row
Unlocked 19 Aug, 2018 @ 9:39pm

Friends List With Benefits

While playing co-op, hug 3 different people on your friends list
Unlocked 25 Jul, 2018 @ 9:40pm

Talent Show

Never lose a cube in Chamber 6 of the Mobility Gels co-op course
Unlocked 2 Mar, 2021 @ 3:52pm