There are fifty achievements in Portal 2 for the Xbox 360 for a total of 1000 gamer points. Here is the full list of achievements you can get in the game.
Air Show (20 Points) – Perform 2 aerial gestures before touching the ground in co-op
Asking for Trouble (10 Points) – Taunt GLaDOS in front of a camera in each of the five co-op courses
Bridge Building (15 Points) – Complete all test chambers in the Hard-Light Surfaces co-op course
Bridge Over Troubling Water (10 Points) – Complete the first Hard Light Bridge test
Can’t Touch This (10 Points) – Dance in front of a turret blocked by a hard light bridge in co-op
Confidence Building (10 Points) – Complete all test chambers in the Mass and Velocity co-op course
Door Prize (20 Points) – Examine all the vitrified test chamber doors
Drop Box (20 Points) – Place a cube on a button without touching the cube
Dual Pit Experiment (15 Points) – Do the same test twice
Empty Gesture (25 Points) – Drop your co-op partner in goo while they are gesturing by removing the bridge under them
Final Transmission (20 Points) – Find the hidden signal in one of the Rat Man’s dens
Four Ring Circus (25 Points) – Enter 4 different portals without touching the ground in co-op
Friends List With Benefits (50 Points) – While playing co-op, hug 3 different people on your friends list
Gesticul-8 (15 Points) – Perform all 8 gestures of your own volition in co-op
Good Listener (5 Points) – Take GLaDOS’ escape advice
High Five (5 Points) – Celebrate your cooperative calibration success
Iron Grip (20 Points) – Never lose a cube in Chamber 6 of the Mass and Velocity co-op course
Lunacy (20 Points) – That just happened
Narbacular Drop (25 Points) – Place a portal under your co-op partner while they are gesturing
No Hard Feelings (10 Points) – Save a turret from redemption
Obstacle Building (15 Points) – Complete all test chambers in the Excursion Funnels co-op course
Overclocker (30 Points) – Complete Test Chamber 10 in 70 seconds
Party of Three (25 Points) – Find the hidden companion cube in co-op test chamber
Pit Boss (30 Points) – Show that pit who’s boss
Portal Conservation Society (20 Points) – Complete Chamber 3 in the Hard-Light Surfaces co-op course using only 5 total portal placements
Portrait of a Lady (10 Points) – Find a hidden portrait
Preservation of Mass (20 Points) – Break the rules in Test Chamber 07
Professor Portal (75 Points) – After completing co-op, complete Calibration Course online with a friend who hasn’t played before
Pturretdactyl (5 Points) – Use an Aerial Faith Plate to launch a turret
Rock Portal Scissors (20 Points) – Win 3 co-op games of rock-paper-scissors in a row
SaBOTour (10 Points) – Make a break for it
Scanned Alone (5 Points) – Stand in a defective turret detector
Schrodinger’s Catch (20 Points) – Catch a blue-painted box before it touches the ground
Ship Overboard (10 Points) – Discover the missing experiment
Smash TV (75 Points) – Break 11 test chamber monitors
Stalemate Associate (15 Points) – Press the button!
Still Alive (15 Points) – Complete Course 4 with neither you nor your co-op partner dying
Stranger Than Friction (15 Points) – Master the Propulsion Gel
Tater Tote (15 Points) – Carry science forward
Team Building (10 Points) – Complete all test chambers in the Team Building co-op course
The Part Where He Kills You (20 Points) – This is that part
Triple Crown (15 Points) – Solve 3 co-op chambers in the Mass and Velocity course in under 60 seconds each
Tunnel of Funnel (15 Points) – Master the Excursion Funnel
Undiscouraged (10 Points) – Complete the first Thermal Discouragement Beam test
Vertically Unchallenged (15 Points) – Master the Repulsion Gel
Wake Up Call (5 Points) – Survive the manual override
White Out (15 Points) – Complete the first Conversion Gel test
You Made Your Point (10 Points) – Refuse to solve the first test in Chapter 8
You Monster (5 Points) – Reunite with GLaDOS
You Saved Science (100 Points) – Complete all test chambers in all courses of co-op
