Obtaining Portal 2 achievements

Wake Up Call Survive the manual override Difficulty: Very Easy How to obtain: To achieve this achievement you simply need to enter the old testing track after waiting for Wheatley to crash through the Docking Station wall. You should then be able to receive the Achievement automatically.

You Monster Reunite with GLaDOS Difficulty: Very Easy How to obtain: This achievement will be obtained as soon as you wake up GLaDOS during the first chapter of the game.

Undiscouraged Complete the first Thermal Discouragement Beam test Difficulty: Easy How to obtain: As your first test of the second chapter, you will be treated to a simple puzzle involving Thermal Discouragement Beams. Complete this test and you'll be awarded with the achievement.

Preservation of Mass Break the rules in Test Chamber 07 Difficulty: Easy How to obtain: To obtain this achievement you will need to bring the Companion Cube with you through Test Chamber 7's exit door. To do this you must solve the chamber as you normally would, but as you reach the exit you will need to place a portal on the other side of the door and place another Portal on any other accessible ground. Pick up your cube from the Super Button and use your accessible Portal to reach the other side of the door. This will grant you the achievement.

Bridge Over Troubling Water Complete the first Hard Light Bridge test Difficulty: Easy How to obtain: During the third chapter, Test Chamber 12 will introduce the new Hard Light Bridge. Similar to the Undiscouraged achievement, you will need to complete this introductory chamber to obtain the achievement.

SaBOTour Make a break for it Difficulty: Easy How to obtain: Half way throughout Test Chamber 21 you will be interrupted by Wheatley, who will offer you an escape route. The achievement will be obtained as soon as you begin your escape.

Stalemate Associate Press the button! Difficulty: Easy How to obtain: Upon facing GLaDOS for the second time, you will be asked to place Wheatley in an Aperture Science Core Transfer Receptacle. After a disagreement between Wheatley and GLaDOS on whether the process should go ahead, you will be asked as a Stalemate Associate to press the Stalemate Associate Button. Doing so will reward you the achievement

Tater Tote Carry science forward Difficulty: Easy How to obtain: Near the end of Chapter 6 you will reunite with GLaDOS in her potato form. Simply pick her up to receive the achievement.

Vertically Unchallenged Master the Repulsion Gel Difficulty: Easy How to obtain: This achievement will be awarded after a series of Repulsion Gel based tests during Chapter 6.

Stranger Than Friction Master the Propulsion Gel Difficulty: Easy How to obtain: Identical to how Vertically Unchallenged worked, you will need to complete a series of Propulsion Gel based tests during Chapter 7.

White Out Complete the first Conversion Gel test Difficulty: Easy How to obtain: Complete the first Conversion Gel test.

Door Prize Examine all the vitrified test chamber doors Difficulty: Medium How to obtain: There are three sets of three vitrified doors in Chapter 6. The first set is on the upper catwalk in the lake area, immediately after the hatch. The second set is on a catwalk opposite the entrance to Pump Station Alpha; exit the lift and turn to the seven-o'-clock position. The third set is in the room above the control room where you find potato GLaDOS. Walk into the room from the top catwalk. Jump on the furniture in the back-left corner and go through the doors.

Final Transmission Find the hidden signal in one of the Rat Man's dens Difficulty: Medium How to obtain: When at the switch near the exit of Test Chamber 06, hit the switch and wait for all the trash to fall. Retrieve the radio from wherever it landed and go back to the switch. On the left wall at the opposite end of the chamber, there will be a portal-able surface; remember where this is. Portal back to the start of the chamber with the radio. Place a portal on the portable-surface mentioned earlier and the other portal on the portable surface the Aerial Faith Plates will throw you into, jump on the Aerial Faith Plates, and you will fly into one of Rattman's Dens—taking the radio in here will get you this achievement.

Schrodinger's Catch Catch a blue-painted box before it touches the ground Difficulty: Hard How to obtain: On Chapter 6, Test Chamber 5 save the game before dropping Repulsion Gel on the cube. Release the gel and try and catch the cube; if it hits the ground, load the earlier save.

TODO

Door Prize Examine all the vitrified test chamber doors

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

Drop Box Place a cube on a button without touching the cube

Dual Pit Experiment Do the same test twice

Air Show Perform 2 aerial gestures before touching the ground in co-op

Asking for Trouble Taunt GLaDOS in front of a camera in each of the five co-op courses

Good Listener Take GLaDOS' escape advice

Bridge Building Complete all test chambers in the Hard-Light Surfaces co-op course

Lunacy That just happened

Can't Touch This Dance in front of a turret blocked by a hard light bridge in co-op

No Hard Feelings Save a turret from redemption

Confidence Building Complete all test chambers in the Mass and Velocity co-op course

Overclocker Complete Test Chamber 10 in 70 seconds

Empty Gesture Drop your co-op partner in goo while they are gesturing by removing the bridge under them

Pit Boss Show that pit who's boss

Four Ring Circus Enter 4 different portals without touching the ground in co-op

Portrait of a Lady Find a hidden portrait

Friends List With Benefits While playing co-op, hug 3 different people on your friends list

Pturretdactyl Use an Aerial Faith Plate to launch a turret

Gesticul-8 Perform all 8 gestures of your own volition in co-op

High Five Celebrate your cooperative calibration success

Scanned Alone Stand in a defective turret detector

Iron Grip Never lose a cube in Chamber 6 of the Mass and Velocity co-op course

Narbacular Drop Place a portal under your co-op partner while they are gesturing

Ship Overboard Discover the missing experiment

Obstacle Building Complete all test chambers in the Excursion Funnels co-op course

Smash TV Break 11 test chamber monitors

Party of Three Find the hidden companion cube in co-op test chamber

Portal Conservation Society Complete Chamber 3 in the Hard-Light Surfaces co-op course using only 5 total portal placements

Professor Portal After completing co-op, complete Calibration Course online with a friend who hasn’t played before

Rock Portal Scissors Win 3 co-op games of rock-paper-scissors in a row

The Part Where He Kills You This is that part

Still Alive Complete Course 4 with neither you nor your co-op partner dying

Team Building Complete all test chambers in the Team Building co-op course

Triple Crown Solve 3 co-op chambers in the Mass and Velocity course in under 60 seconds each

Tunnel of Funnel Master the Excursion Funnel

You Saved Science Complete all test chambers in all courses of co-op