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51 of 51 (100%) Achievements Earned::

Personal Achievements
 

Wake Up Call

Survive the manual override
Unlocked 8 Apr, 2016 @ 11:52am

You Monster

Reunite with GLaDOS
Unlocked 8 Apr, 2016 @ 12:18pm

Undiscouraged

Complete the first Thermal Discouragement Beam test
Unlocked 8 Apr, 2016 @ 12:24pm

Bridge Over Troubling Water

Complete the first Hard Light Bridge test
Unlocked 8 Apr, 2016 @ 1:12pm

SaBOTour

Make a break for it
Unlocked 8 Apr, 2016 @ 2:05pm

Stalemate Associate

Press the button!
Unlocked 8 Apr, 2016 @ 2:35pm

Tater Tote

Carry science forward
Unlocked 8 Apr, 2016 @ 9:34pm

Vertically Unchallenged

Master the Repulsion Gel
Unlocked 8 Apr, 2016 @ 8:50pm

Stranger Than Friction

Master the Propulsion Gel
Unlocked 8 Apr, 2016 @ 9:42pm

White Out

Complete the first Conversion Gel test
Unlocked 9 Apr, 2016 @ 8:08am

Tunnel of Funnel

Master the Excursion Funnel
Unlocked 2 May, 2020 @ 1:01pm

Dual Pit Experiment

Do the same test twice
Unlocked 9 Apr, 2016 @ 8:13am

The Part Where He Kills You

This is that part
Unlocked 2 May, 2020 @ 1:15pm

Lunacy

That just happened
Unlocked 19 Apr, 2016 @ 9:22pm

Drop Box

Place a cube on a button without touching the cube
Unlocked 20 Apr, 2016 @ 7:24pm

Overclocker

Complete Test Chamber 10 in 70 seconds
Unlocked 22 Jul, 2020 @ 2:29pm

Pit Boss

Show that pit who's boss
Unlocked 2 May, 2020 @ 1:17pm

Preservation of Mass

Break the rules in Test Chamber 07
Unlocked 8 Apr, 2016 @ 12:54pm

Pturretdactyl

Use an Aerial Faith Plate to launch a turret
Unlocked 10 Jul, 2016 @ 4:27pm

Final Transmission

Find the hidden signal in one of the Rat Man's dens
Unlocked 24 Apr, 2017 @ 4:03pm

Good Listener

Take GLaDOS' escape advice
Unlocked 8 Apr, 2016 @ 2:05pm

Scanned Alone

Stand in a defective turret detector
Unlocked 8 Apr, 2016 @ 2:21pm

No Hard Feelings

Save a turret from redemption
Unlocked 8 Apr, 2016 @ 2:17pm

Schrodinger's Catch

Catch a blue-painted box before it touches the ground
Unlocked 22 Jul, 2020 @ 2:49pm

Ship Overboard

Discover the missing experiment
Unlocked 29 May, 2017 @ 6:55pm

Door Prize

Examine all the vitrified test chamber doors
Unlocked 1 May, 2020 @ 2:23pm

Portrait of a Lady

Find a hidden portrait
Unlocked 8 Apr, 2016 @ 9:34pm

You Made Your Point

Refuse to solve the first test in Chapter 8
Unlocked 11 Jul, 2016 @ 4:33pm

Smash TV

Break 11 test chamber monitors
Unlocked 2 May, 2020 @ 1:11pm

High Five

Celebrate your cooperative calibration success
Unlocked 9 Apr, 2016 @ 1:01pm

Team Building

Complete all test chambers in the Team Building co-op course
Unlocked 9 Apr, 2016 @ 7:25pm

Confidence Building

Complete all test chambers in the Mass and Velocity co-op course
Unlocked 5 Jul, 2016 @ 10:12am

Bridge Building

Complete all test chambers in the Hard-Light Surfaces co-op course
Unlocked 6 Jul, 2016 @ 1:00pm

Obstacle Building

Complete all test chambers in the Excursion Funnels co-op course
Unlocked 8 Jul, 2016 @ 1:20pm

You Saved Science

Complete all test chambers in all courses of co-op
Unlocked 9 Jul, 2016 @ 6:29pm

Iron Grip

Never lose a cube in Chamber 6 of the Mass and Velocity co-op course
Unlocked 11 Jul, 2016 @ 8:54pm

Gesticul-8

Perform all 8 gestures of your own volition in co-op
Unlocked 7 Jul, 2016 @ 8:32pm

Can't Touch This

Dance in front of a turret blocked by a hard light bridge in co-op
Unlocked 6 Jul, 2016 @ 12:43pm

Empty Gesture

Drop your co-op partner in goo while they are gesturing by removing the bridge under them
Unlocked 2 Sep, 2016 @ 10:16pm

Party of Three

Find the hidden companion cube in co-op test chamber
Unlocked 8 Jul, 2016 @ 1:08pm

Narbacular Drop

Place a portal under your co-op partner while they are gesturing
Unlocked 5 Jul, 2016 @ 11:23am

Professor Portal

After completing co-op, complete Calibration Course online with a friend who hasn’t played before
Unlocked 6 May, 2017 @ 2:11pm

Air Show

Perform 2 aerial gestures before touching the ground in co-op
Unlocked 5 Jul, 2016 @ 11:23am

Portal Conservation Society

Complete Chamber 3 in the Hard-Light Surfaces co-op course using only 5 total portal placements
Unlocked 2 Sep, 2016 @ 11:12pm

Four Ring Circus

Enter 4 different portals without touching the ground in co-op
Unlocked 14 Jul, 2016 @ 7:25pm

Triple Crown

Solve 3 co-op chambers in the Mass and Velocity course in under 60 seconds each
Unlocked 14 Jul, 2016 @ 7:58pm

Still Alive

Complete Course 4 with neither you nor your co-op partner dying
Unlocked 26 Mar, 2023 @ 6:35pm

Asking for Trouble

Taunt GLaDOS in front of a camera in each of the five co-op courses
Unlocked 12 Jul, 2016 @ 7:27pm

Rock Portal Scissors

Win 3 co-op games of rock-paper-scissors in a row
Unlocked 23 Oct, 2016 @ 7:12pm

Friends List With Benefits

While playing co-op, hug 3 different people on your friends list
Unlocked 2 Sep, 2016 @ 9:40pm

Talent Show

Never lose a cube in Chamber 6 of the Mobility Gels co-op course
Unlocked 8 Jul, 2016 @ 5:29pm