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Wait until the platform leading into the back of the room appears, then head up and to the right of button place your first portal. Now hit the button to release the Displacement Cube and look through the small gap and fire the second portal at the wall here.

Make your way through the first portal behind you and you'll reappear where the Cube landed. Take it with you back through the portal and over to the laser beam.

Now it's just a simple matter of lining up the Cube with the beam receiver and dropping it.

Step back through the portal or run though the displacement barrier towards the - now open - exit.

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Guide Information
  • Publisher
    Valve Corporation
  • Platforms,
    PC, PS3, XB 360
  • Genre
  • Guide Release
    30 June 2011
  • Last Updated
    7 December 2020
  • Guide Author

Share this free guide:

Welcome back to Aperture Science, a world where your Companion Cube isn’t you’re only company. Take control of Chell once again in Valve’s sequel which takes you on an humorous and puzzling adventure and in our detail-packed guide we’ll show you:

  • How to solve every test chamber first time.
  • Conquer every co-op chamber with a friend.
  • Loads of High Definition screenshots and videos showing you the solutions to every single chamber.
  • High Definition strategy videos for every achievement in the game.
  • Uncover all of the hidden secrets and Easter eggs.

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