Steam-Achievements.com

Portal 2 achievements

The "Perpetual Testing Initiative" has been expanded to allow you to design co-op puzzles for you and your friends!

Portal 2 has 51 achievements. The rarest is Still Alive, unlocked by just 2.4% of owners; the most common is Wake Up Call at 74%. An average owner has unlocked 12.3 of 51 (24%), and a full 100% run is worth 5,588 rarity points.

51achievements
12.3 (24%)achievements unlocked by an average owner
5,588total rarity score across all achievements
max 2.4%of players unlocked all achievements

Rarity tiers

Graded by the share of owners who have unlocked each one, from Steam's global statistics.

All 51 achievements

#AchievementUnlocked byTierRarity scoreMedian playtimeAvg. unlock order
Wake Up CallSurvive the manual override
 74% Common 14 10h 1.8
You MonsterReunite with GLaDOS
 64.7% Common 15 11h 3
UndiscouragedComplete the first Thermal Discouragement Beam test
 62.6% Common 16 11h 4.1
High FiveCelebrate your cooperative calibration success
 58.5% Common 17 9.7h 5.9
Bridge Over Troubling WaterComplete the first Hard Light Bridge test
 53.2% Common 19 13h 5.9
Team BuildingComplete all test chambers in the Team Building co-op course
 49.4% Common 20 10h 7.6
SaBOTourMake a break for it
 46.5% Common 22 14h 7.3
Stalemate AssociatePress the button!
 45.5% Common 22 14h 10
Vertically UnchallengedMaster the Repulsion Gel
 42.8% Common 23 14h 11
Tater ToteCarry science forward
 40.9% Common 24 14h 12.5
Confidence BuildingComplete all test chambers in the Mass and Velocity co-op course
 40.9% Common 24 12h 9.9
Stranger Than FrictionMaster the Propulsion Gel
 39.3% Common 25 15h 14
White OutComplete the first Conversion Gel test
 38.2% Common 26 15h 15.1
Dual Pit ExperimentDo the same test twice
 36.9% Common 27 15h 16
Tunnel of FunnelMaster the Excursion Funnel
 35.1% Common 28 15h 17.1
Scanned AloneStand in a defective turret detector
 34.7% Common 29 15h 11.4
The Part Where He Kills YouThis is that part
 34.4% Common 29 16h 18.1
LunacyThat just happened
 34.1% Common 29 15h 19.1
Air ShowPerform 2 aerial gestures before touching the ground in co-op
 33.2% Common 30 14h 10.1
Bridge BuildingComplete all test chambers in the Hard-Light Surfaces co-op course
 32% Common 31 14h 12.4
No Hard FeelingsSave a turret from redemption
 31% Common 32 15h 10.8
Drop BoxPlace a cube on a button without touching the cube
 28.9% Common 35 14h 10
Good ListenerTake GLaDOS' escape advice
 28.3% Common 35 15h 10.7
Gesticul-8Perform all 8 gestures of your own volition in co-op
 27% Common 37 16h 15
Obstacle BuildingComplete all test chambers in the Excursion Funnels co-op course
 26.3% Common 38 16h 16.2
Preservation of MassBreak the rules in Test Chamber 07
 24.4% Rare 41 20h 10.5
You Saved ScienceComplete all test chambers in all courses of co-op
 21.2% Rare 47 20h 18.2
Portrait of a LadyFind a hidden portrait
 11.6% Rare 86 24h 21.6
Ship OverboardDiscover the missing experiment
 10.7% Rare 93 24h 20
Can't Touch ThisDance in front of a turret blocked by a hard light bridge in co-op
 9.8% Epic 102 27h 22.1
Rock Portal ScissorsWin 3 co-op games of rock-paper-scissors in a row
 9.8% Epic 102 24h 22.1
Asking for TroubleTaunt GLaDOS in front of a camera in each of the five co-op courses
 8.9% Epic 112 25h 25.3
PturretdactylUse an Aerial Faith Plate to launch a turret
 8.7% Epic 115 30h 19.5
Pit BossShow that pit who's boss
 7.9% Epic 127 24h 23.7
Door PrizeExamine all the vitrified test chamber doors
 7.2% Epic 139 20h 22.5
Schrodinger's CatchCatch a blue-painted box before it touches the ground
 6.9% Epic 145 25h 23.3
Four Ring CircusEnter 4 different portals without touching the ground in co-op
 6.8% Epic 147 25h 26.7
You Made Your PointRefuse to solve the first test in Chapter 8
 6.5% Epic 154 27h 28.1
Professor PortalAfter completing co-op, complete Calibration Course online with a friend who hasn’t played before
 5.9% Epic 169 31h 30.1
Narbacular DropPlace a portal under your co-op partner while they are gesturing
 5.8% Epic 172 28h 28.4
Final TransmissionFind the hidden signal in one of the Rat Man's dens
 5.4% Epic 185 25h 23.8
Empty GestureDrop your co-op partner in goo while they are gesturing by removing the bridge under them
 4.6% Fabled 217 25h 32
Friends List With BenefitsWhile playing co-op, hug 3 different people on your friends list
 4.5% Fabled 222 32h 35.5
OverclockerComplete Test Chamber 10 in 70 seconds
 4% Fabled 250 24h 25.1
Smash TVBreak 11 test chamber monitors
 3.7% Fabled 270 24h 33.2
Iron GripNever lose a cube in Chamber 6 of the Mass and Velocity co-op course
 3.6% Fabled 278 28h 33.9
Party of ThreeFind the hidden companion cube in co-op test chamber
 3.5% Fabled 286 24h 35
Triple CrownSolve 3 co-op chambers in the Mass and Velocity course in under 60 seconds each
 3% Fabled 333 29h 36
Portal Conservation SocietyComplete Chamber 3 in the Hard-Light Surfaces co-op course using only 5 total portal placements
 2.8% Fabled 357 25h 40.7
Talent ShowNever lose a cube in Chamber 6 of the Mobility Gels co-op course
 2.7% Fabled 370 24h 48.2
Still AliveComplete Course 4 with neither you nor your co-op partner dying
 2.4% Fabled 417 24h 46

51 of 51 carry a public description; Steam withholds the rest as spoilers.
Median playtime is the median total hours these owners have in Portal 2 — not the time the achievement itself takes, which Steam publishes no way to measure. It says what kind of player holds it: the rarest rows are high largely because completionists play more. Median rather than mean because playtime is heavily right-skewed, and measured across 397 sampled owners.
Avg. unlock order is the mean position an achievement occupies in a player's run, measured across 422 randomly sampled owners — Steam publishes no such figure. It is shown only where at least 5 of them hold the achievement, which is why the rarest rows are blank: at 2.4% only a handful of sampled players have it. 51 of 51 clear that bar.

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