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51 of 51 (100%) Achievements Earned::

Personal Achievements
 

Wake Up Call

Survive the manual override
Unlocked 26 Nov, 2016 @ 12:13am

You Monster

Reunite with GLaDOS
Unlocked 26 Nov, 2016 @ 12:34am

Undiscouraged

Complete the first Thermal Discouragement Beam test
Unlocked 26 Nov, 2016 @ 3:56pm

Bridge Over Troubling Water

Complete the first Hard Light Bridge test
Unlocked 26 Nov, 2016 @ 4:29pm

SaBOTour

Make a break for it
Unlocked 26 Nov, 2016 @ 7:55pm

Stalemate Associate

Press the button!
Unlocked 26 Nov, 2016 @ 8:23pm

Tater Tote

Carry science forward
Unlocked 26 Nov, 2016 @ 9:23pm

Vertically Unchallenged

Master the Repulsion Gel
Unlocked 26 Nov, 2016 @ 9:00pm

Stranger Than Friction

Master the Propulsion Gel
Unlocked 26 Nov, 2016 @ 9:42pm

White Out

Complete the first Conversion Gel test
Unlocked 26 Nov, 2016 @ 9:59pm

Tunnel of Funnel

Master the Excursion Funnel
Unlocked 17 Dec, 2016 @ 8:14pm

Dual Pit Experiment

Do the same test twice
Unlocked 15 Dec, 2016 @ 10:03am

The Part Where He Kills You

This is that part
Unlocked 3 Dec, 2016 @ 3:17pm

Lunacy

That just happened
Unlocked 4 Dec, 2016 @ 1:07pm

Drop Box

Place a cube on a button without touching the cube
Unlocked 27 Nov, 2016 @ 3:53pm

Overclocker

Complete Test Chamber 10 in 70 seconds
Unlocked 18 Dec, 2016 @ 11:47am

Pit Boss

Show that pit who's boss
Unlocked 15 Dec, 2016 @ 1:26pm

Preservation of Mass

Break the rules in Test Chamber 07
Unlocked 26 Nov, 2016 @ 4:11pm

Pturretdactyl

Use an Aerial Faith Plate to launch a turret
Unlocked 15 Dec, 2016 @ 11:25am

Final Transmission

Find the hidden signal in one of the Rat Man's dens
Unlocked 15 Dec, 2016 @ 11:27am

Good Listener

Take GLaDOS' escape advice
Unlocked 15 Dec, 2016 @ 12:08pm

Scanned Alone

Stand in a defective turret detector
Unlocked 15 Dec, 2016 @ 12:19pm

No Hard Feelings

Save a turret from redemption
Unlocked 26 Nov, 2016 @ 8:05pm

Schrodinger's Catch

Catch a blue-painted box before it touches the ground
Unlocked 24 Feb, 2017 @ 12:51pm

Ship Overboard

Discover the missing experiment
Unlocked 15 Dec, 2016 @ 1:18pm

Door Prize

Examine all the vitrified test chamber doors
Unlocked 15 Dec, 2016 @ 1:17pm

Portrait of a Lady

Find a hidden portrait
Unlocked 15 Dec, 2016 @ 11:25am

You Made Your Point

Refuse to solve the first test in Chapter 8
Unlocked 15 Dec, 2016 @ 10:02am

Smash TV

Break 11 test chamber monitors
Unlocked 18 Dec, 2016 @ 11:01am

High Five

Celebrate your cooperative calibration success
Unlocked 14 Dec, 2016 @ 4:17pm

Team Building

Complete all test chambers in the Team Building co-op course
Unlocked 14 Dec, 2016 @ 4:28pm

Confidence Building

Complete all test chambers in the Mass and Velocity co-op course
Unlocked 14 Dec, 2016 @ 4:52pm

Bridge Building

Complete all test chambers in the Hard-Light Surfaces co-op course
Unlocked 14 Dec, 2016 @ 5:24pm

Obstacle Building

Complete all test chambers in the Excursion Funnels co-op course
Unlocked 14 Dec, 2016 @ 6:34pm

You Saved Science

Complete all test chambers in all courses of co-op
Unlocked 20 Dec, 2016 @ 2:22pm

Iron Grip

Never lose a cube in Chamber 6 of the Mass and Velocity co-op course
Unlocked 14 Dec, 2016 @ 4:46pm

Gesticul-8

Perform all 8 gestures of your own volition in co-op
Unlocked 14 Dec, 2016 @ 6:07pm

Can't Touch This

Dance in front of a turret blocked by a hard light bridge in co-op
Unlocked 14 Dec, 2016 @ 5:11pm

Empty Gesture

Drop your co-op partner in goo while they are gesturing by removing the bridge under them
Unlocked 30 Dec, 2016 @ 12:26pm

Party of Three

Find the hidden companion cube in co-op test chamber
Unlocked 22 Feb, 2020 @ 6:58pm

Narbacular Drop

Place a portal under your co-op partner while they are gesturing
Unlocked 24 Feb, 2019 @ 2:32pm

Professor Portal

After completing co-op, complete Calibration Course online with a friend who hasn’t played before
Unlocked 22 Oct, 2020 @ 5:43pm

Air Show

Perform 2 aerial gestures before touching the ground in co-op
Unlocked 14 Dec, 2016 @ 6:12pm

Portal Conservation Society

Complete Chamber 3 in the Hard-Light Surfaces co-op course using only 5 total portal placements
Unlocked 14 Dec, 2016 @ 5:52pm

Four Ring Circus

Enter 4 different portals without touching the ground in co-op
Unlocked 24 Feb, 2019 @ 2:50pm

Triple Crown

Solve 3 co-op chambers in the Mass and Velocity course in under 60 seconds each
Unlocked 25 Mar, 2019 @ 9:46pm

Still Alive

Complete Course 4 with neither you nor your co-op partner dying
Unlocked 22 Feb, 2020 @ 6:45pm

Asking for Trouble

Taunt GLaDOS in front of a camera in each of the five co-op courses
Unlocked 30 Dec, 2016 @ 11:14am

Rock Portal Scissors

Win 3 co-op games of rock-paper-scissors in a row
Unlocked 18 Feb, 2017 @ 5:06pm

Friends List With Benefits

While playing co-op, hug 3 different people on your friends list
Unlocked 18 Feb, 2019 @ 3:10pm

Talent Show

Never lose a cube in Chamber 6 of the Mobility Gels co-op course
Unlocked 22 Feb, 2020 @ 7:33pm