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A nice short and snappy chamber that can be finished in under a minute without any real trouble. Once you enter the room, look left where the beam hits the corner of the wall and set your first portal here.

Now look to the pillar on your left and place the second portal on the side that’s facing the three beam receptors.

Position the Cube so it’s directing the laser from the roof into the viewable receptor, and then place the second Cube directly in front of the last receptor (as above).

All three beams receptors will now be lit up, opening the exit to the fourth (and final) chamber for this chapter!

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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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