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51 of 51 (100%) Achievements Earned::

Personal Achievements
 

Wake Up Call

Survive the manual override
Unlocked 26 Nov, 2016 @ 7:41pm

You Monster

Reunite with GLaDOS
Unlocked 26 Nov, 2016 @ 8:03pm

Undiscouraged

Complete the first Thermal Discouragement Beam test
Unlocked 4 Jul, 2016 @ 10:19am

Bridge Over Troubling Water

Complete the first Hard Light Bridge test
Unlocked 18 Mar, 2017 @ 12:04pm

SaBOTour

Make a break for it
Unlocked 7 Nov, 2018 @ 3:35pm

Stalemate Associate

Press the button!
Unlocked 15 Nov, 2018 @ 3:55pm

Tater Tote

Carry science forward
Unlocked 17 Nov, 2018 @ 8:37am

Vertically Unchallenged

Master the Repulsion Gel
Unlocked 16 Nov, 2018 @ 5:13pm

Stranger Than Friction

Master the Propulsion Gel
Unlocked 17 Nov, 2018 @ 8:57am

White Out

Complete the first Conversion Gel test
Unlocked 17 Nov, 2018 @ 8:11pm

Tunnel of Funnel

Master the Excursion Funnel
Unlocked 10 Jul, 2019 @ 9:38am

Dual Pit Experiment

Do the same test twice
Unlocked 17 Nov, 2018 @ 8:46pm

The Part Where He Kills You

This is that part
Unlocked 28 Jul, 2021 @ 3:17pm

Lunacy

That just happened
Unlocked 27 Mar, 2017 @ 9:39am

Drop Box

Place a cube on a button without touching the cube
Unlocked 7 Jul, 2016 @ 8:56am

Overclocker

Complete Test Chamber 10 in 70 seconds
Unlocked 8 Aug, 2023 @ 10:48am

Pit Boss

Show that pit who's boss
Unlocked 8 Aug, 2023 @ 9:42am

Preservation of Mass

Break the rules in Test Chamber 07
Unlocked 17 May, 2017 @ 6:09pm

Pturretdactyl

Use an Aerial Faith Plate to launch a turret
Unlocked 7 Aug, 2023 @ 12:41pm

Final Transmission

Find the hidden signal in one of the Rat Man's dens
Unlocked 8 Aug, 2023 @ 10:39am

Good Listener

Take GLaDOS' escape advice
Unlocked 24 Jul, 2022 @ 1:29pm

Scanned Alone

Stand in a defective turret detector
Unlocked 15 Nov, 2018 @ 3:42pm

No Hard Feelings

Save a turret from redemption
Unlocked 15 Nov, 2018 @ 3:39pm

Schrodinger's Catch

Catch a blue-painted box before it touches the ground
Unlocked 8 Aug, 2023 @ 10:06am

Ship Overboard

Discover the missing experiment
Unlocked 17 Nov, 2018 @ 8:35am

Door Prize

Examine all the vitrified test chamber doors
Unlocked 8 Aug, 2023 @ 10:10am

Portrait of a Lady

Find a hidden portrait
Unlocked 17 Nov, 2018 @ 8:44am

You Made Your Point

Refuse to solve the first test in Chapter 8
Unlocked 8 Aug, 2023 @ 10:18am

Smash TV

Break 11 test chamber monitors
Unlocked 8 Aug, 2023 @ 11:54am

High Five

Celebrate your cooperative calibration success
Unlocked 18 Nov, 2016 @ 7:40pm

Team Building

Complete all test chambers in the Team Building co-op course
Unlocked 23 Jul, 2020 @ 10:43pm

Confidence Building

Complete all test chambers in the Mass and Velocity co-op course
Unlocked 10 Aug, 2020 @ 3:44pm

Bridge Building

Complete all test chambers in the Hard-Light Surfaces co-op course
Unlocked 12 Mar, 2022 @ 2:00pm

Obstacle Building

Complete all test chambers in the Excursion Funnels co-op course
Unlocked 30 Jan, 2023 @ 4:14pm

You Saved Science

Complete all test chambers in all courses of co-op
Unlocked 29 Apr, 2023 @ 12:49pm

Iron Grip

Never lose a cube in Chamber 6 of the Mass and Velocity co-op course
Unlocked 7 Aug, 2023 @ 11:36pm

Gesticul-8

Perform all 8 gestures of your own volition in co-op
Unlocked 12 Mar, 2022 @ 2:40pm

Can't Touch This

Dance in front of a turret blocked by a hard light bridge in co-op
Unlocked 7 Aug, 2023 @ 12:32pm

Empty Gesture

Drop your co-op partner in goo while they are gesturing by removing the bridge under them
Unlocked 7 Aug, 2023 @ 12:35pm

Party of Three

Find the hidden companion cube in co-op test chamber
Unlocked 7 Aug, 2023 @ 11:49pm

Narbacular Drop

Place a portal under your co-op partner while they are gesturing
Unlocked 7 Aug, 2023 @ 12:08pm

Professor Portal

After completing co-op, complete Calibration Course online with a friend who hasn’t played before
Unlocked 8 Aug, 2023 @ 7:44pm

Air Show

Perform 2 aerial gestures before touching the ground in co-op
Unlocked 23 Jul, 2020 @ 10:52pm

Portal Conservation Society

Complete Chamber 3 in the Hard-Light Surfaces co-op course using only 5 total portal placements
Unlocked 7 Aug, 2023 @ 1:10pm

Four Ring Circus

Enter 4 different portals without touching the ground in co-op
Unlocked 29 Apr, 2023 @ 12:19pm

Triple Crown

Solve 3 co-op chambers in the Mass and Velocity course in under 60 seconds each
Unlocked 7 Aug, 2023 @ 11:55pm

Still Alive

Complete Course 4 with neither you nor your co-op partner dying
Unlocked 7 Aug, 2023 @ 11:25pm

Asking for Trouble

Taunt GLaDOS in front of a camera in each of the five co-op courses
Unlocked 29 Apr, 2023 @ 12:01pm

Rock Portal Scissors

Win 3 co-op games of rock-paper-scissors in a row
Unlocked 7 Aug, 2023 @ 12:06pm

Friends List With Benefits

While playing co-op, hug 3 different people on your friends list
Unlocked 7 Aug, 2023 @ 12:05pm

Talent Show

Never lose a cube in Chamber 6 of the Mobility Gels co-op course
Unlocked 7 Aug, 2023 @ 11:43pm