Portal 2

51 achievements

Ultra Rare×10

Very Rare×14

Rare×6

Uncommon×16

Common×5

Achievement Difficulty Distribution

10
20%

Ultra Rare

14
27%

Very Rare

6
12%

Rare

16
31%

Uncommon

5
10%

Common

Distribution of all 51 achievements by global unlock rate

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51 achievements

Still Alive

Complete Course 4 with neither you nor your co-op partner dying

Ultra Rare2.4%

Talent Show

Never lose a cube in Chamber 6 of the Mobility Gels co-op course

Ultra Rare2.6%

Portal Conservation Society

Complete Chamber 3 in the Hard-Light Surfaces co-op course using only 5 total portal placements

Ultra Rare2.8%

Triple Crown

Solve 3 co-op chambers in the Mass and Velocity course in under 60 seconds each

Ultra Rare3.0%

Iron Grip

Never lose a cube in Chamber 6 of the Mass and Velocity co-op course

Ultra Rare3.6%

Party of Three

Find the hidden companion cube in co-op test chamber

Ultra Rare3.6%

Smash TV

Break 11 test chamber monitors

Ultra Rare3.7%

Overclocker

Complete Test Chamber 10 in 70 seconds

Ultra Rare4.0%

Friends List With Benefits

While playing co-op, hug 3 different people on your friends list

Ultra Rare4.5%

Empty Gesture

Drop your co-op partner in goo while they are gesturing by removing the bridge under them

Ultra Rare4.6%

Final Transmission

Find the hidden signal in one of the Rat Man's dens

Very Rare5.5%

Narbacular Drop

Place a portal under your co-op partner while they are gesturing

Very Rare5.8%

Professor Portal

After completing co-op, complete Calibration Course online with a friend who hasn’t played before

Very Rare5.9%

You Made Your Point

Refuse to solve the first test in Chapter 8

Very Rare6.6%

Four Ring Circus

Enter 4 different portals without touching the ground in co-op

Very Rare6.8%

Schrodinger's Catch

Catch a blue-painted box before it touches the ground

Very Rare6.9%

Door Prize

Examine all the vitrified test chamber doors

Very Rare7.3%

Pit Boss

Show that pit who's boss

Very Rare7.9%

Pturretdactyl

Use an Aerial Faith Plate to launch a turret

Very Rare8.7%

Asking for Trouble

Taunt GLaDOS in front of a camera in each of the five co-op courses

Very Rare8.9%

Can't Touch This

Dance in front of a turret blocked by a hard light bridge in co-op

Very Rare9.8%

Rock Portal Scissors

Win 3 co-op games of rock-paper-scissors in a row

Very Rare9.8%

Ship Overboard

Discover the missing experiment

Very Rare10.7%

Portrait of a Lady

Find a hidden portrait

Very Rare11.7%

You Saved Science

Complete all test chambers in all courses of co-op

Rare21.2%

Preservation of Mass

Break the rules in Test Chamber 07

Rare24.5%

Obstacle Building

Complete all test chambers in the Excursion Funnels co-op course

Rare26.3%

Gesticul-8

Perform all 8 gestures of your own volition in co-op

Rare27.1%

Good Listener

Take GLaDOS' escape advice

Rare28.4%

Drop Box

Place a cube on a button without touching the cube

Rare29.0%

No Hard Feelings

Save a turret from redemption

Uncommon31.1%

Bridge Building

Complete all test chambers in the Hard-Light Surfaces co-op course

Uncommon32.0%

Air Show

Perform 2 aerial gestures before touching the ground in co-op

Uncommon33.3%

Lunacy

That just happened

Uncommon34.2%

The Part Where He Kills You

This is that part

Uncommon34.5%

Scanned Alone

Stand in a defective turret detector

Uncommon34.8%

Tunnel of Funnel

Master the Excursion Funnel

Uncommon35.2%

Dual Pit Experiment

Do the same test twice

Uncommon37.1%

White Out

Complete the first Conversion Gel test

Uncommon38.4%

Stranger Than Friction

Master the Propulsion Gel

Uncommon39.5%

Confidence Building

Complete all test chambers in the Mass and Velocity co-op course

Uncommon40.9%

Tater Tote

Carry science forward

Uncommon41.1%

Vertically Unchallenged

Master the Repulsion Gel

Uncommon43.0%

Stalemate Associate

Press the button!

Uncommon45.6%

SaBOTour

Make a break for it

Uncommon46.6%

Team Building

Complete all test chambers in the Team Building co-op course

Uncommon49.5%

Bridge Over Troubling Water

Complete the first Hard Light Bridge test

Common53.4%

High Five

Celebrate your cooperative calibration success

Common58.6%

Undiscouraged

Complete the first Thermal Discouragement Beam test

Common62.9%

You Monster

Reunite with GLaDOS

Common64.9%

Wake Up Call

Survive the manual override

Common74.3%