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51 of 51 (100%) Achievements Earned::

Personal Achievements
 

Wake Up Call

Survive the manual override
Unlocked Nov 14, 2015 @ 11:47pm

You Monster

Reunite with GLaDOS
Unlocked Nov 29, 2015 @ 5:46am

Undiscouraged

Complete the first Thermal Discouragement Beam test
Unlocked Nov 29, 2015 @ 5:57am

Bridge Over Troubling Water

Complete the first Hard Light Bridge test
Unlocked Dec 13, 2015 @ 3:12am

SaBOTour

Make a break for it
Unlocked Dec 13, 2015 @ 4:28am

Stalemate Associate

Press the button!
Unlocked Dec 13, 2015 @ 5:11am

Tater Tote

Carry science forward
Unlocked Jan 31, 2016 @ 5:06am

Vertically Unchallenged

Master the Repulsion Gel
Unlocked Jan 31, 2016 @ 4:35am

Stranger Than Friction

Master the Propulsion Gel
Unlocked Jan 31, 2016 @ 6:10am

White Out

Complete the first Conversion Gel test
Unlocked Jan 31, 2016 @ 7:48am

Tunnel of Funnel

Master the Excursion Funnel
Unlocked Feb 1, 2016 @ 9:17am

Dual Pit Experiment

Do the same test twice
Unlocked Feb 1, 2016 @ 7:52am

The Part Where He Kills You

This is that part
Unlocked Feb 1, 2016 @ 9:32am

Lunacy

That just happened
Unlocked Feb 1, 2016 @ 10:18am

Drop Box

Place a cube on a button without touching the cube
Unlocked Mar 8, 2016 @ 12:31pm

Overclocker

Complete Test Chamber 10 in 70 seconds
Unlocked Aug 28, 2018 @ 11:05am

Pit Boss

Show that pit who's boss
Unlocked Aug 27, 2018 @ 5:44pm

Preservation of Mass

Break the rules in Test Chamber 07
Unlocked Dec 12, 2015 @ 12:15pm

Pturretdactyl

Use an Aerial Faith Plate to launch a turret
Unlocked Mar 10, 2016 @ 8:00am

Final Transmission

Find the hidden signal in one of the Rat Man's dens
Unlocked Sep 16, 2018 @ 7:27am

Good Listener

Take GLaDOS' escape advice
Unlocked Dec 13, 2015 @ 4:28am

Scanned Alone

Stand in a defective turret detector
Unlocked Aug 28, 2018 @ 6:54am

No Hard Feelings

Save a turret from redemption
Unlocked Dec 13, 2015 @ 4:48am

Schrodinger's Catch

Catch a blue-painted box before it touches the ground
Unlocked Sep 16, 2018 @ 8:25am

Ship Overboard

Discover the missing experiment
Unlocked Mar 11, 2016 @ 6:25am

Door Prize

Examine all the vitrified test chamber doors
Unlocked Aug 28, 2018 @ 7:13am

Portrait of a Lady

Find a hidden portrait
Unlocked Mar 11, 2016 @ 6:36am

You Made Your Point

Refuse to solve the first test in Chapter 8
Unlocked Sep 16, 2018 @ 8:45am

Smash TV

Break 11 test chamber monitors
Unlocked Sep 16, 2018 @ 8:59am

High Five

Celebrate your cooperative calibration success
Unlocked Nov 28, 2015 @ 5:54am

Team Building

Complete all test chambers in the Team Building co-op course
Unlocked Feb 23, 2016 @ 10:50am

Confidence Building

Complete all test chambers in the Mass and Velocity co-op course
Unlocked Jun 27, 2016 @ 11:30am

Bridge Building

Complete all test chambers in the Hard-Light Surfaces co-op course
Unlocked Jun 27, 2016 @ 12:28pm

Obstacle Building

Complete all test chambers in the Excursion Funnels co-op course
Unlocked Jul 1, 2016 @ 10:50am

You Saved Science

Complete all test chambers in all courses of co-op
Unlocked Jul 1, 2016 @ 3:08pm

Iron Grip

Never lose a cube in Chamber 6 of the Mass and Velocity co-op course
Unlocked Sep 17, 2018 @ 1:46pm

Gesticul-8

Perform all 8 gestures of your own volition in co-op
Unlocked Jul 1, 2016 @ 9:52am

Can't Touch This

Dance in front of a turret blocked by a hard light bridge in co-op
Unlocked Jun 27, 2016 @ 11:56am

Empty Gesture

Drop your co-op partner in goo while they are gesturing by removing the bridge under them
Unlocked Aug 27, 2016 @ 10:00am

Party of Three

Find the hidden companion cube in co-op test chamber
Unlocked Sep 17, 2018 @ 12:43pm

Narbacular Drop

Place a portal under your co-op partner while they are gesturing
Unlocked Aug 27, 2016 @ 9:50am

Professor Portal

After completing co-op, complete Calibration Course online with a friend who hasn’t played before
Unlocked Sep 14, 2018 @ 2:09pm

Air Show

Perform 2 aerial gestures before touching the ground in co-op
Unlocked Feb 20, 2016 @ 5:51am

Portal Conservation Society

Complete Chamber 3 in the Hard-Light Surfaces co-op course using only 5 total portal placements
Unlocked Sep 17, 2018 @ 1:36pm

Four Ring Circus

Enter 4 different portals without touching the ground in co-op
Unlocked Jul 1, 2016 @ 2:26pm

Triple Crown

Solve 3 co-op chambers in the Mass and Velocity course in under 60 seconds each
Unlocked Sep 17, 2018 @ 2:29pm

Still Alive

Complete Course 4 with neither you nor your co-op partner dying
Unlocked Sep 18, 2018 @ 12:58pm

Asking for Trouble

Taunt GLaDOS in front of a camera in each of the five co-op courses
Unlocked Jul 1, 2016 @ 3:05pm

Rock Portal Scissors

Win 3 co-op games of rock-paper-scissors in a row
Unlocked Aug 5, 2016 @ 1:29pm

Friends List With Benefits

While playing co-op, hug 3 different people on your friends list
Unlocked Aug 27, 2016 @ 9:47am

Talent Show

Never lose a cube in Chamber 6 of the Mobility Gels co-op course
Unlocked Sep 18, 2018 @ 11:15am