01Achievements
Every Portal 2 achievement, ordered by how few players in the world have unlocked it.
22 of 51 entries
You Saved ScienceComplete all test chambers in all courses of co-op21.2%Uncommon
Preservation of MassBreak the rules in Test Chamber 0724.4%Uncommon
Obstacle BuildingComplete all test chambers in the Excursion Funnels co-op course26.3%Uncommon
Gesticul-8Perform all 8 gestures of your own volition in co-op27.1%Uncommon
Good ListenerTake GLaDOS' escape advice28.4%Uncommon
Drop BoxPlace a cube on a button without touching the cube28.9%Uncommon
No Hard FeelingsSave a turret from redemption31.1%Uncommon
Bridge BuildingComplete all test chambers in the Hard-Light Surfaces co-op course32%Uncommon
Air ShowPerform 2 aerial gestures before touching the ground in co-op33.3%Uncommon
LunacyThat just happened34.2%Uncommon
The Part Where He Kills YouThis is that part34.4%Uncommon
Scanned AloneStand in a defective turret detector34.7%Uncommon
Tunnel of FunnelMaster the Excursion Funnel35.2%Uncommon
Dual Pit ExperimentDo the same test twice37%Uncommon
White OutComplete the first Conversion Gel test38.3%Uncommon
Stranger Than FrictionMaster the Propulsion Gel39.4%Uncommon
Confidence BuildingComplete all test chambers in the Mass and Velocity co-op course40.9%Uncommon
Tater ToteCarry science forward41%Uncommon
Vertically UnchallengedMaster the Repulsion Gel42.9%Uncommon
Stalemate AssociatePress the button!45.6%Uncommon
SaBOTourMake a break for it46.5%Uncommon
Team BuildingComplete all test chambers in the Team Building co-op course49.4%Uncommon
Data from Steam — Steam Web API Terms of Use. Last updated .