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51 of 51 (100%) Achievements Earned::

Personal Achievements
 

Wake Up Call

Survive the manual override
Unlocked Jan 28, 2015 @ 2:34pm

You Monster

Reunite with GLaDOS
Unlocked Jan 29, 2015 @ 9:30am

Undiscouraged

Complete the first Thermal Discouragement Beam test
Unlocked Jan 29, 2015 @ 9:35am

Bridge Over Troubling Water

Complete the first Hard Light Bridge test
Unlocked Feb 3, 2015 @ 8:55am

SaBOTour

Make a break for it
Unlocked Feb 5, 2015 @ 3:02pm

Stalemate Associate

Press the button!
Unlocked Feb 5, 2015 @ 3:42pm

Tater Tote

Carry science forward
Unlocked Feb 7, 2015 @ 2:31am

Vertically Unchallenged

Master the Repulsion Gel
Unlocked Feb 6, 2015 @ 3:33pm

Stranger Than Friction

Master the Propulsion Gel
Unlocked Feb 8, 2015 @ 2:47pm

White Out

Complete the first Conversion Gel test
Unlocked Feb 9, 2015 @ 10:15am

Tunnel of Funnel

Master the Excursion Funnel
Unlocked Feb 11, 2015 @ 9:38am

Dual Pit Experiment

Do the same test twice
Unlocked Feb 9, 2015 @ 3:33pm

The Part Where He Kills You

This is that part
Unlocked Feb 11, 2015 @ 1:01pm

Lunacy

That just happened
Unlocked Feb 13, 2015 @ 1:10pm

Drop Box

Place a cube on a button without touching the cube
Unlocked Feb 1, 2015 @ 8:03am

Overclocker

Complete Test Chamber 10 in 70 seconds
Unlocked Nov 16, 2022 @ 5:23pm

Pit Boss

Show that pit who's boss
Unlocked Nov 8, 2022 @ 8:38pm

Preservation of Mass

Break the rules in Test Chamber 07
Unlocked Feb 1, 2015 @ 8:43am

Pturretdactyl

Use an Aerial Faith Plate to launch a turret
Unlocked Oct 8, 2019 @ 2:37pm

Final Transmission

Find the hidden signal in one of the Rat Man's dens
Unlocked Nov 8, 2022 @ 9:07pm

Good Listener

Take GLaDOS' escape advice
Unlocked Nov 9, 2022 @ 9:27am

Scanned Alone

Stand in a defective turret detector
Unlocked Feb 5, 2015 @ 3:17pm

No Hard Feelings

Save a turret from redemption
Unlocked Feb 5, 2015 @ 3:13pm

Schrodinger's Catch

Catch a blue-painted box before it touches the ground
Unlocked Nov 10, 2022 @ 12:11pm

Ship Overboard

Discover the missing experiment
Unlocked Nov 10, 2022 @ 7:47am

Door Prize

Examine all the vitrified test chamber doors
Unlocked Nov 10, 2022 @ 7:46am

Portrait of a Lady

Find a hidden portrait
Unlocked Nov 8, 2022 @ 8:32pm

You Made Your Point

Refuse to solve the first test in Chapter 8
Unlocked Nov 8, 2022 @ 8:32pm

Smash TV

Break 11 test chamber monitors
Unlocked Nov 17, 2022 @ 9:38pm

High Five

Celebrate your cooperative calibration success
Unlocked Jan 29, 2015 @ 11:00am

Team Building

Complete all test chambers in the Team Building co-op course
Unlocked Feb 10, 2018 @ 6:18am

Confidence Building

Complete all test chambers in the Mass and Velocity co-op course
Unlocked Jul 20, 2020 @ 10:51am

Bridge Building

Complete all test chambers in the Hard-Light Surfaces co-op course
Unlocked Aug 27, 2020 @ 8:04am

Obstacle Building

Complete all test chambers in the Excursion Funnels co-op course
Unlocked Sep 4, 2020 @ 12:39pm

You Saved Science

Complete all test chambers in all courses of co-op
Unlocked Sep 11, 2020 @ 1:24pm

Iron Grip

Never lose a cube in Chamber 6 of the Mass and Velocity co-op course
Unlocked Jan 14, 2023 @ 6:46pm

Gesticul-8

Perform all 8 gestures of your own volition in co-op
Unlocked Sep 4, 2020 @ 12:00pm

Can't Touch This

Dance in front of a turret blocked by a hard light bridge in co-op
Unlocked Sep 4, 2020 @ 12:25pm

Empty Gesture

Drop your co-op partner in goo while they are gesturing by removing the bridge under them
Unlocked Nov 7, 2022 @ 1:57pm

Party of Three

Find the hidden companion cube in co-op test chamber
Unlocked Nov 7, 2022 @ 2:25pm

Narbacular Drop

Place a portal under your co-op partner while they are gesturing
Unlocked Nov 7, 2022 @ 1:58pm

Professor Portal

After completing co-op, complete Calibration Course online with a friend who hasn’t played before
Unlocked Nov 16, 2022 @ 4:45pm

Air Show

Perform 2 aerial gestures before touching the ground in co-op
Unlocked Feb 12, 2020 @ 11:48am

Portal Conservation Society

Complete Chamber 3 in the Hard-Light Surfaces co-op course using only 5 total portal placements
Unlocked Dec 2, 2022 @ 12:02pm

Four Ring Circus

Enter 4 different portals without touching the ground in co-op
Unlocked Mar 18, 2020 @ 10:42am

Triple Crown

Solve 3 co-op chambers in the Mass and Velocity course in under 60 seconds each
Unlocked Nov 7, 2022 @ 1:42pm

Still Alive

Complete Course 4 with neither you nor your co-op partner dying
Unlocked Jan 20, 2023 @ 9:23am

Asking for Trouble

Taunt GLaDOS in front of a camera in each of the five co-op courses
Unlocked Jan 14, 2023 @ 4:55pm

Rock Portal Scissors

Win 3 co-op games of rock-paper-scissors in a row
Unlocked Nov 7, 2022 @ 12:09pm

Friends List With Benefits

While playing co-op, hug 3 different people on your friends list
Unlocked Dec 28, 2019 @ 11:28pm

Talent Show

Never lose a cube in Chamber 6 of the Mobility Gels co-op course
Unlocked Jan 14, 2023 @ 6:14pm