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This’ll start the constant respawning of Companion Cubes nearby, so walk across the light bridge until you’re level with the wall that goes in to your left.

Walk back through the portal and you should find yourself back at the start of the chamber, you’ve still got to get that Cube over to the big red button, so that’s where we’re heading now.

Lay a portal/light bridge down below you - to your left - and when you walk through it, you’ll re-emerge back at the start. Simply place a portal on the wall to the right of the exit door, walk through and then into the exit itself.

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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

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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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