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Chamber 4
Portal 2

Chamber 4

Master Portal 2's Chamber 4 with this step-by-step guide. Learn how to use Companion Cubes and portals to solve the puzzles and reach the exit.

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Master Portal 2's Chamber 4 with this step-by-step guide. Learn how to use Companion Cubes and portals to solve the puzzles and reach the exit.

Alright, let's tackle Chamber 4 in Portal 2! This one's all about getting those Companion Cubes where they need to go.

Walkthrough
  1. 1
    You'll start on a platform. Your first goal is to get the Companion Cube that's across from you. Lay a portal on any nearby wall, and you'll reappear on the platform with the cube.
  2. 2
    Now, aim a portal at the wall directly behind the Companion Cube. Turn around, and you should be facing the cube.
  3. 3
    Pick up the cube, then drop down to the ground level. Place this cube on one of the red floor buttons.
  4. 4
    Next, turn to your right and look over the ledge. You'll spot another cube chilling on its own.
  5. 5
    Fire a portal at the wall above that cube. It should drop down onto the platform to your left.
  6. 6
    It'll reappear on the platform up and to your left. Fire another portal on a nearby wall so you can grab this second Companion Cube.
  7. 7
    Bring this second cube down and place it on the remaining red button. This will open the exit.
  8. 8
    To get to the exit, look for a spot to drop a portal right at your feet. This will drop you through the roof above the exit area.
  9. 9
    Walk up the broken glass and head left towards the lift that will take you to the next test chamber.
Tips
  • Don't forget to use the portals to reposition yourself to grab the cubes.
  • Make sure both red buttons are activated to open the exit.

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