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51 of 51 (100%) Achievements Earned::

Personal Achievements
 

Wake Up Call

Survive the manual override
Unlocked 24 Jun, 2017 @ 6:54pm

You Monster

Reunite with GLaDOS
Unlocked 27 Jun, 2017 @ 7:14am

Undiscouraged

Complete the first Thermal Discouragement Beam test
Unlocked 27 Jun, 2017 @ 7:30am

Bridge Over Troubling Water

Complete the first Hard Light Bridge test
Unlocked 27 Jun, 2017 @ 1:54pm

SaBOTour

Make a break for it
Unlocked 28 Jun, 2017 @ 3:34pm

Stalemate Associate

Press the button!
Unlocked 28 Jun, 2017 @ 4:17pm

Tater Tote

Carry science forward
Unlocked 28 Jun, 2017 @ 5:54pm

Vertically Unchallenged

Master the Repulsion Gel
Unlocked 28 Jun, 2017 @ 5:25pm

Stranger Than Friction

Master the Propulsion Gel
Unlocked 29 Jun, 2017 @ 7:30am

White Out

Complete the first Conversion Gel test
Unlocked 29 Jun, 2017 @ 7:48am

Tunnel of Funnel

Master the Excursion Funnel
Unlocked 29 Jun, 2017 @ 6:20pm

Dual Pit Experiment

Do the same test twice
Unlocked 29 Jun, 2017 @ 2:51pm

The Part Where He Kills You

This is that part
Unlocked 29 Jun, 2017 @ 6:35pm

Lunacy

That just happened
Unlocked 29 Jun, 2017 @ 7:15pm

Drop Box

Place a cube on a button without touching the cube
Unlocked 24 Jun, 2018 @ 4:01pm

Overclocker

Complete Test Chamber 10 in 70 seconds
Unlocked 13 Jan, 2021 @ 12:04am

Pit Boss

Show that pit who's boss
Unlocked 15 Jan, 2021 @ 6:50am

Preservation of Mass

Break the rules in Test Chamber 07
Unlocked 24 Jun, 2018 @ 4:08pm

Pturretdactyl

Use an Aerial Faith Plate to launch a turret
Unlocked 12 Jan, 2021 @ 11:46pm

Final Transmission

Find the hidden signal in one of the Rat Man's dens
Unlocked 24 Jun, 2018 @ 3:58pm

Good Listener

Take GLaDOS' escape advice
Unlocked 28 Jun, 2017 @ 3:35pm

Scanned Alone

Stand in a defective turret detector
Unlocked 28 Jun, 2017 @ 3:51pm

No Hard Feelings

Save a turret from redemption
Unlocked 28 Jun, 2017 @ 3:46pm

Schrodinger's Catch

Catch a blue-painted box before it touches the ground
Unlocked 15 Jul, 2023 @ 4:42pm

Ship Overboard

Discover the missing experiment
Unlocked 28 Jun, 2017 @ 5:51pm

Door Prize

Examine all the vitrified test chamber doors
Unlocked 30 Sep, 2018 @ 8:44am

Portrait of a Lady

Find a hidden portrait
Unlocked 24 Aug, 2017 @ 8:21am

You Made Your Point

Refuse to solve the first test in Chapter 8
Unlocked 24 Jun, 2018 @ 3:28pm

Smash TV

Break 11 test chamber monitors
Unlocked 15 Jul, 2023 @ 5:33pm

High Five

Celebrate your cooperative calibration success
Unlocked 25 Jun, 2017 @ 5:57pm

Team Building

Complete all test chambers in the Team Building co-op course
Unlocked 27 Jun, 2017 @ 4:34am

Confidence Building

Complete all test chambers in the Mass and Velocity co-op course
Unlocked 26 Jun, 2017 @ 3:09pm

Bridge Building

Complete all test chambers in the Hard-Light Surfaces co-op course
Unlocked 4 Mar, 2018 @ 3:37pm

Obstacle Building

Complete all test chambers in the Excursion Funnels co-op course
Unlocked 3 Jun, 2022 @ 11:02am

You Saved Science

Complete all test chambers in all courses of co-op
Unlocked 3 Jun, 2022 @ 2:51pm

Iron Grip

Never lose a cube in Chamber 6 of the Mass and Velocity co-op course
Unlocked 15 Jul, 2023 @ 3:08pm

Gesticul-8

Perform all 8 gestures of your own volition in co-op
Unlocked 9 Jun, 2018 @ 5:43pm

Can't Touch This

Dance in front of a turret blocked by a hard light bridge in co-op
Unlocked 3 Jun, 2022 @ 10:59am

Empty Gesture

Drop your co-op partner in goo while they are gesturing by removing the bridge under them
Unlocked 15 Jul, 2023 @ 3:13pm

Party of Three

Find the hidden companion cube in co-op test chamber
Unlocked 15 Jul, 2023 @ 3:47pm

Narbacular Drop

Place a portal under your co-op partner while they are gesturing
Unlocked 30 Jun, 2017 @ 6:40pm

Professor Portal

After completing co-op, complete Calibration Course online with a friend who hasn’t played before
Unlocked 15 Jul, 2023 @ 2:53pm

Air Show

Perform 2 aerial gestures before touching the ground in co-op
Unlocked 26 Jun, 2017 @ 2:11pm

Portal Conservation Society

Complete Chamber 3 in the Hard-Light Surfaces co-op course using only 5 total portal placements
Unlocked 15 Jul, 2023 @ 3:38pm

Four Ring Circus

Enter 4 different portals without touching the ground in co-op
Unlocked 3 Jun, 2022 @ 10:46am

Triple Crown

Solve 3 co-op chambers in the Mass and Velocity course in under 60 seconds each
Unlocked 15 Jul, 2023 @ 4:04pm

Still Alive

Complete Course 4 with neither you nor your co-op partner dying
Unlocked 16 Jul, 2023 @ 12:28pm

Asking for Trouble

Taunt GLaDOS in front of a camera in each of the five co-op courses
Unlocked 3 Jun, 2022 @ 1:20pm

Rock Portal Scissors

Win 3 co-op games of rock-paper-scissors in a row
Unlocked 23 Jun, 2018 @ 2:29pm

Friends List With Benefits

While playing co-op, hug 3 different people on your friends list
Unlocked 27 Mar, 2020 @ 10:23pm

Talent Show

Never lose a cube in Chamber 6 of the Mobility Gels co-op course
Unlocked 15 Jul, 2023 @ 4:19pm