Published Title Publisher
New Title Publisher
Updated Title
Published Title Score Editor's Choice
Published Title Score

Your first two portals should go on the blue gel puddle and on the slanted wall to the right of the entrance. This’ll send some gel onto the wall, from here, shoot a portal up at the top wall on the left so you can walk out onto the metal girders above.

From here, place another portal on the slanted wall and then drop down (firing an entrance portal in front of you before you hit the ground). You'll fly up to the blue gel and get bounced up to the next part of the chamber.

As soon as you make it up to the upper level, immediately look back down at chamber 4’s gel puddle and place an entrance portal in the gel. Now run up the stairs and look for the long patch of white wall on the left-hand pillar.

You’ll want to set your exit portal here so the blue gel makes it way over to the slanted wall, covering it completely. Now head over to the platform on your left and look down at the floor below you. Fire an entrance portal directly below you then fall off, you’ll be carried onto the gel and then bounce up to the walkway above.

Look to the wall on the right of the walkway and use the portals to make it to the walkway directly above you (be sure to jump through the portal as there’s a sneaky gap between the wall and the walkway itself, and it’s surprisingly easy to fall down from).

No Comments
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.

Get a Gamer Guides Premium account: