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51 of 51 (100%) Achievements Earned::

Personal Achievements
 

Wake Up Call

Survive the manual override
Unlocked 15 Feb, 2015 @ 8:39am

You Monster

Reunite with GLaDOS
Unlocked 15 Feb, 2015 @ 8:56am

Undiscouraged

Complete the first Thermal Discouragement Beam test
Unlocked 15 Feb, 2015 @ 9:00am

Bridge Over Troubling Water

Complete the first Hard Light Bridge test
Unlocked 15 Feb, 2015 @ 9:28am

SaBOTour

Make a break for it
Unlocked 16 Feb, 2015 @ 5:38pm

Stalemate Associate

Press the button!
Unlocked 16 Feb, 2015 @ 6:04pm

Tater Tote

Carry science forward
Unlocked 18 Feb, 2015 @ 6:47am

Vertically Unchallenged

Master the Repulsion Gel
Unlocked 18 Feb, 2015 @ 6:32am

Stranger Than Friction

Master the Propulsion Gel
Unlocked 18 Feb, 2015 @ 7:00am

White Out

Complete the first Conversion Gel test
Unlocked 18 Feb, 2015 @ 7:15am

Tunnel of Funnel

Master the Excursion Funnel
Unlocked 18 Feb, 2015 @ 8:45am

Dual Pit Experiment

Do the same test twice
Unlocked 18 Feb, 2015 @ 7:37am

The Part Where He Kills You

This is that part
Unlocked 18 Feb, 2015 @ 8:54am

Lunacy

That just happened
Unlocked 18 Feb, 2015 @ 9:17am

Drop Box

Place a cube on a button without touching the cube
Unlocked 2 Aug, 2015 @ 8:59am

Overclocker

Complete Test Chamber 10 in 70 seconds
Unlocked 2 Aug, 2015 @ 7:34am

Pit Boss

Show that pit who's boss
Unlocked 18 Feb, 2015 @ 8:56am

Preservation of Mass

Break the rules in Test Chamber 07
Unlocked 11 May, 2015 @ 11:52am

Pturretdactyl

Use an Aerial Faith Plate to launch a turret
Unlocked 16 Feb, 2015 @ 6:52pm

Final Transmission

Find the hidden signal in one of the Rat Man's dens
Unlocked 15 Feb, 2015 @ 9:09am

Good Listener

Take GLaDOS' escape advice
Unlocked 16 Feb, 2015 @ 5:39pm

Scanned Alone

Stand in a defective turret detector
Unlocked 16 Feb, 2015 @ 5:49pm

No Hard Feelings

Save a turret from redemption
Unlocked 16 Feb, 2015 @ 5:47pm

Schrodinger's Catch

Catch a blue-painted box before it touches the ground
Unlocked 2 Aug, 2015 @ 9:06am

Ship Overboard

Discover the missing experiment
Unlocked 2 Aug, 2015 @ 7:26am

Door Prize

Examine all the vitrified test chamber doors
Unlocked 2 Aug, 2015 @ 7:25am

Portrait of a Lady

Find a hidden portrait
Unlocked 18 Feb, 2015 @ 6:52am

You Made Your Point

Refuse to solve the first test in Chapter 8
Unlocked 23 Feb, 2015 @ 5:44pm

Smash TV

Break 11 test chamber monitors
Unlocked 4 Aug, 2015 @ 3:50pm

High Five

Celebrate your cooperative calibration success
Unlocked 15 Feb, 2015 @ 9:28pm

Team Building

Complete all test chambers in the Team Building co-op course
Unlocked 15 Feb, 2015 @ 9:50pm

Confidence Building

Complete all test chambers in the Mass and Velocity co-op course
Unlocked 15 Feb, 2015 @ 10:49pm

Bridge Building

Complete all test chambers in the Hard-Light Surfaces co-op course
Unlocked 15 Feb, 2015 @ 11:51pm

Obstacle Building

Complete all test chambers in the Excursion Funnels co-op course
Unlocked 16 Feb, 2015 @ 7:04pm

You Saved Science

Complete all test chambers in all courses of co-op
Unlocked 16 Feb, 2015 @ 8:34pm

Iron Grip

Never lose a cube in Chamber 6 of the Mass and Velocity co-op course
Unlocked 6 Aug, 2015 @ 5:41pm

Gesticul-8

Perform all 8 gestures of your own volition in co-op
Unlocked 16 Feb, 2015 @ 9:33am

Can't Touch This

Dance in front of a turret blocked by a hard light bridge in co-op
Unlocked 16 Feb, 2015 @ 7:01pm

Empty Gesture

Drop your co-op partner in goo while they are gesturing by removing the bridge under them
Unlocked 6 Aug, 2015 @ 5:49pm

Party of Three

Find the hidden companion cube in co-op test chamber
Unlocked 17 Feb, 2015 @ 1:47pm

Narbacular Drop

Place a portal under your co-op partner while they are gesturing
Unlocked 15 Feb, 2015 @ 9:31pm

Professor Portal

After completing co-op, complete Calibration Course online with a friend who hasn’t played before
Unlocked 6 Aug, 2015 @ 4:22pm

Air Show

Perform 2 aerial gestures before touching the ground in co-op
Unlocked 16 Feb, 2015 @ 9:13am

Portal Conservation Society

Complete Chamber 3 in the Hard-Light Surfaces co-op course using only 5 total portal placements
Unlocked 6 Aug, 2015 @ 5:21pm

Four Ring Circus

Enter 4 different portals without touching the ground in co-op
Unlocked 6 Aug, 2015 @ 5:07pm

Triple Crown

Solve 3 co-op chambers in the Mass and Velocity course in under 60 seconds each
Unlocked 23 Feb, 2015 @ 4:56pm

Still Alive

Complete Course 4 with neither you nor your co-op partner dying
Unlocked 8 Aug, 2015 @ 8:31am

Asking for Trouble

Taunt GLaDOS in front of a camera in each of the five co-op courses
Unlocked 16 Feb, 2015 @ 8:32pm

Rock Portal Scissors

Win 3 co-op games of rock-paper-scissors in a row
Unlocked 17 Feb, 2015 @ 2:12pm

Friends List With Benefits

While playing co-op, hug 3 different people on your friends list
Unlocked 8 Aug, 2015 @ 6:41am

Talent Show

Never lose a cube in Chamber 6 of the Mobility Gels co-op course
Unlocked 8 Aug, 2015 @ 7:04am