Achievement Breakdown:
Story Related: (14)
Missable: (8)
Secondary Objectives: (5)
Collectibles: (1)
Miscellaneous: (1)


1. Wake Up Call: Survive the manual override.


2. You Monster: Reunite with GLaDOS.


3. Undiscouraged: Complete the first Thermal Discouragement Beam test.


4. Bridge Over Troubling Water: Complete the first Hard Light Bridge test.


5. SaBOTour: Make a break for it.


6. Stalemate Associate: Press the button!


7. Vertically Unchallenged: Master the Repulsion Gel.


8. Tater Tote: Carry science forward.


9. Stranger Than Friction: Master the Propulsion Gel.


10. White Out: Complete the first Conversion Gel test.


11. Dual Pit Experiment: Do the same test twice.


12. Tunnel of Funnel: Master the Excursion Funnel.


13. The Part Where He Kills You: This is that part.


14. Lunacy: That just happened.


1. Good Listener: Take GLaDOS' escape advice.


2. No Hard Feelings: Save a Turret from redemption.


3. Scanned Alone: Stand in a defective Turret detector.


4. Ship Overboard: Discover the missing experiment.


5. Door Prize: Examine all 6 Vitrified Test Chamber doors.


6. Portrait of a Lady: Find a hidden portrait.


7. You Made Your Point: Refuse to solve the first test in Chapter 8.


8. Pit Boss: Show that pit who's boss.


1. Pturretdactyl: Use an Aerial Faith Plate to launch a Turret.


2. Final Transmission: Find the hidden signal in one of the Rat Man's dens.


3. Preservation of Mass: Break the rules in Test Chamber 07.


4. Overclocker: Complete Test Chamber 10 in 70 seconds.


5. Schrodinger’s Catch: Catch a blue-painted box before it touches the ground.


1. Smash TV: Break all 11 Test Chamber Monitors.


1. Drop Box: Place a Cube on a button without touching the Cube.

Achievement Breakdown:
Story Related: (6)
Secondary Objectives: (9)
Miscellaneous: (7)


1. Team Building: Complete all 6 Test Chambers in the Team Building Coop Course.


2. Confidence Building: Complete all 8 Test Chambers in the Mass & Velocity Coop Course.


3. Bridge Building: Complete all 8 Test Chambers in the Hard Light Surfaces Coop Course.


4. Obstacle Building: Complete all 9 Test Chambers in the Excursion Funnels Coop Course.


5. You Saved Science: Complete all Test Chambers in all 5 Courses of Coop.


6. Professor Portal: After completing Coop, complete Calibration Course online with a Friend who hasn’t played before.


1. Air Show: Perform 2 Aerial Gestures before touching the ground in Coop.


2. Empty Gesture: Drop your Coop Partner in goo while they are Gesturing by removing the bridge
under them.


3. Can’t Touch This: Dance in front of a Turret blocked by a Hard Light Bridge in Coop.


4. Party of Three: Find the hidden Companion Cube in Coop Test Chamber.


5. Triple Crown: Solve 3 Coop chambers in the Mass & Velocity Course in under
60 seconds each.


6. Iron Grip: Never lose a cube in Chamber 6 of the Mass & Velocity Coop Course.


7. Portal Conservation Society: Complete Chamber 3 in the Hard-Light Surfaces Coop course using only 5 total Portal placements.


8. Talent Show: Never lose a Cube in Chamber 6 of the Mobility Gels Coop Course.


9. Still Alive: Complete Course 4 with neither you nor your Coop Partner dying.


1. High Five: Celebrate your Cooperative calibration success.


2. Rock Portal Scissors: Win 3 Coop games of rock-paper-scissors in a row.


3. Narbacular Drop: Place a Portal under your Coop Partner while they are Gesturing.


4. Four Ring Circus: Enter 4 different Portals without touching the ground in Coop.


5. Gesticul-8: Perform all 8 Gestures of your own volition in Coop.


6. Asking For Trouble: Taunt GLaDOS in front of a Camera in each of the five Coop Courses.


7. Friends List With Benefits: While playing Coop, hug 3 different people on your Friends List.