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Achievements completed: 28 (54.90%)

Achievements: (28 / 51):
# Global Completion % Description API Name
1 49.50% Team Building: Complete all test chambers in the Team Building co-op course ACH.TEAM_BUILDING
2 40.90% Confidence Building: Complete all test chambers in the Mass and Velocity co-op course ACH.MASS_AND_VELOCITY
3 33.50% Air Show: Perform 2 aerial gestures before touching the ground in co-op ACH.WITH_STYLE
4 32.00% Bridge Building: Complete all test chambers in the Hard-Light Surfaces co-op course ACH.HUG_NAME
5 27.10% Gesticul-8: Perform all 8 gestures of your own volition in co-op ACH.TAUNTS
6 26.30% Obstacle Building: Complete all test chambers in the Excursion Funnels co-op course ACH.EXCURSION_FUNNELS
7 21.20% You Saved Science: Complete all test chambers in all courses of co-op ACH.NEW_BLOOD
8 9.90% Rock Portal Scissors: Win 3 co-op games of rock-paper-scissors in a row ACH.ROCK_CRUSHES_ROBOT
9 9.80% Can't Touch This: Dance in front of a turret blocked by a hard light bridge in co-op ACH.YOU_MONSTER
10 8.90% Asking for Trouble: Taunt GLaDOS in front of a camera in each of the five co-op courses ACH.TAUNT_CAMERA
11 6.80% Four Ring Circus: Enter 4 different portals without touching the ground in co-op ACH.FOUR_PORTALS
12 5.80% Narbacular Drop: Place a portal under your co-op partner while they are gesturing ACH.PORTAL_TAUNT
13 5.80% Professor Portal: After completing co-op, complete Calibration Course online with a friend who hasn’t played before ACH.TEACHER
14 4.60% Empty Gesture: Drop your co-op partner in goo while they are gesturing by removing the bridge under them ACH.PARTNER_DROP
15 4.50% Friends List With Benefits: While playing co-op, hug 3 different people on your friends list ACH.SPREAD_THE_LOVE
16 4.00% Overclocker: Complete Test Chamber 10 in 70 seconds ACH.SPEED_RUN_LEVEL
17 3.60% Iron Grip: Never lose a cube in Chamber 6 of the Mass and Velocity co-op course ACH.NICE_CATCH
18 3.60% Smash TV: Break 11 test chamber monitors ACH.BREAK_MONITORS
19 3.50% Party of Three: Find the hidden companion cube in co-op test chamber ACH.PARTY_OF_THREE
20 3.00% Triple Crown: Solve 3 co-op chambers in the Mass and Velocity course in under 60 seconds each ACH.SPEED_RUN_COOP
21 2.70% Portal Conservation Society: Complete Chamber 3 in the Hard-Light Surfaces co-op course using only 5 total portal placements ACH.LIMITED_PORTALS
22 2.60% Talent Show: Never lose a cube in Chamber 6 of the Mobility Gels co-op course ACH.SUMMER_SALE
23 2.40% Still Alive: Complete Course 4 with neither you nor your co-op partner dying ACH.STAYING_ALIVE