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: Medium 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: Medium How to obtain: Identical to how Vertically Unchallenged worked, you will need to complete a series of Propulsion Gel based tests during Chapter 7.