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51 of 51 (100%) Achievements Earned::

Personal Achievements
 

Wake Up Call

Survive the manual override
Unlocked 13 Aug, 2011 @ 7:22pm

You Monster

Reunite with GLaDOS
Unlocked 13 Aug, 2011 @ 7:40pm

Undiscouraged

Complete the first Thermal Discouragement Beam test
Unlocked 13 Aug, 2011 @ 7:43pm

Bridge Over Troubling Water

Complete the first Hard Light Bridge test
Unlocked 14 Aug, 2011 @ 10:13am

SaBOTour

Make a break for it
Unlocked 28 Apr, 2020 @ 12:18am

Stalemate Associate

Press the button!
Unlocked 14 Aug, 2011 @ 8:28pm

Tater Tote

Carry science forward
Unlocked 24 Aug, 2011 @ 3:22pm

Vertically Unchallenged

Master the Repulsion Gel
Unlocked 24 Aug, 2011 @ 3:14pm

Stranger Than Friction

Master the Propulsion Gel
Unlocked 24 Aug, 2011 @ 3:31pm

White Out

Complete the first Conversion Gel test
Unlocked 24 Aug, 2011 @ 3:37pm

Tunnel of Funnel

Master the Excursion Funnel
Unlocked 24 Aug, 2011 @ 4:27pm

Dual Pit Experiment

Do the same test twice
Unlocked 24 Aug, 2011 @ 3:56pm

The Part Where He Kills You

This is that part
Unlocked 14 Aug, 2011 @ 7:46pm

Lunacy

That just happened
Unlocked 14 Aug, 2011 @ 8:04pm

Drop Box

Place a cube on a button without touching the cube
Unlocked 14 Aug, 2011 @ 10:02am

Overclocker

Complete Test Chamber 10 in 70 seconds
Unlocked 30 Jun, 2022 @ 11:08pm

Pit Boss

Show that pit who's boss
Unlocked 14 Aug, 2011 @ 7:47pm

Preservation of Mass

Break the rules in Test Chamber 07
Unlocked 14 Aug, 2011 @ 10:05am

Pturretdactyl

Use an Aerial Faith Plate to launch a turret
Unlocked 28 Apr, 2020 @ 12:04am

Final Transmission

Find the hidden signal in one of the Rat Man's dens
Unlocked 14 Aug, 2011 @ 10:00am

Good Listener

Take GLaDOS' escape advice
Unlocked 30 Jun, 2022 @ 11:22pm

Scanned Alone

Stand in a defective turret detector
Unlocked 14 Aug, 2011 @ 8:19pm

No Hard Feelings

Save a turret from redemption
Unlocked 28 Apr, 2020 @ 12:25am

Schrodinger's Catch

Catch a blue-painted box before it touches the ground
Unlocked 30 Jun, 2022 @ 11:48pm

Ship Overboard

Discover the missing experiment
Unlocked 30 Jun, 2022 @ 11:52pm

Door Prize

Examine all the vitrified test chamber doors
Unlocked 30 Jun, 2022 @ 11:52pm

Portrait of a Lady

Find a hidden portrait
Unlocked 24 Aug, 2011 @ 3:26pm

You Made Your Point

Refuse to solve the first test in Chapter 8
Unlocked 1 Jul, 2022 @ 12:01am

Smash TV

Break 11 test chamber monitors
Unlocked 2 Jul, 2022 @ 11:41pm

High Five

Celebrate your cooperative calibration success
Unlocked 13 Aug, 2011 @ 6:12pm

Team Building

Complete all test chambers in the Team Building co-op course
Unlocked 13 Aug, 2011 @ 6:32pm

Confidence Building

Complete all test chambers in the Mass and Velocity co-op course
Unlocked 13 Aug, 2011 @ 7:11pm

Bridge Building

Complete all test chambers in the Hard-Light Surfaces co-op course
Unlocked 25 Apr, 2020 @ 6:14pm

Obstacle Building

Complete all test chambers in the Excursion Funnels co-op course
Unlocked 25 Apr, 2020 @ 6:59pm

You Saved Science

Complete all test chambers in all courses of co-op
Unlocked 2 Jul, 2022 @ 10:50am

Iron Grip

Never lose a cube in Chamber 6 of the Mass and Velocity co-op course
Unlocked 2 Jul, 2022 @ 11:02am

Gesticul-8

Perform all 8 gestures of your own volition in co-op
Unlocked 25 Apr, 2020 @ 6:35pm

Can't Touch This

Dance in front of a turret blocked by a hard light bridge in co-op
Unlocked 9 Dec, 2012 @ 2:02pm

Empty Gesture

Drop your co-op partner in goo while they are gesturing by removing the bridge under them
Unlocked 1 Jul, 2022 @ 2:31pm

Party of Three

Find the hidden companion cube in co-op test chamber
Unlocked 2 Jul, 2022 @ 10:35pm

Narbacular Drop

Place a portal under your co-op partner while they are gesturing
Unlocked 1 Jul, 2022 @ 2:00pm

Professor Portal

After completing co-op, complete Calibration Course online with a friend who hasn’t played before
Unlocked 2 Jul, 2022 @ 11:07pm

Air Show

Perform 2 aerial gestures before touching the ground in co-op
Unlocked 13 Aug, 2011 @ 6:38pm

Portal Conservation Society

Complete Chamber 3 in the Hard-Light Surfaces co-op course using only 5 total portal placements
Unlocked 1 Jul, 2022 @ 3:10pm

Four Ring Circus

Enter 4 different portals without touching the ground in co-op
Unlocked 2 Jul, 2022 @ 11:06am

Triple Crown

Solve 3 co-op chambers in the Mass and Velocity course in under 60 seconds each
Unlocked 25 Apr, 2020 @ 5:15pm

Still Alive

Complete Course 4 with neither you nor your co-op partner dying
Unlocked 2 Jul, 2022 @ 10:22pm

Asking for Trouble

Taunt GLaDOS in front of a camera in each of the five co-op courses
Unlocked 2 Jul, 2022 @ 10:05am

Rock Portal Scissors

Win 3 co-op games of rock-paper-scissors in a row
Unlocked 2 Jul, 2022 @ 10:40pm

Friends List With Benefits

While playing co-op, hug 3 different people on your friends list
Unlocked 2 Jul, 2022 @ 10:43pm

Talent Show

Never lose a cube in Chamber 6 of the Mobility Gels co-op course
Unlocked 2 Jul, 2022 @ 10:30pm