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This is your first ‘proper’ test involving the white Conversion Gel, so one key point to remember is that whatever direction you’re facing when you’re laying a portal on a surface (such as the floor), is the angle at which the gel comes out. Knowing this helps you direct the flow of gel much more effectively (which in turn makes things a lot less frustrating)!

Drop down into the gel pool and set your first portal directly under where the Conversion Gel hits the ground. Turn to face the grated fence and lay your next portal so the gel is flying up and over the fence and into the area outside.

Keep the portal under the white gel where it is and now set the other portal in the gel outside the enclosed box. Now you’re in more open space, turn to face the slanted wall panel at the far end of the room (to your left).

Guide the gel so it's covering the floor all the way up to the slanted panel. Once it's sufficiently covered in the gel, turn to your left and guide the gel towards the two pillars.

You're objective over here is to coat the inside sections of the two pillars with Conversion Gel by firing the exit portal a bit higher up each side, coating both sides equally.

Once the gel has reached the top, place a portal on the wall above the metal walkway and drop down into the portal. Once on the walkway, run around it until you can see the slanted wall below you. Set a portal on the panel then walk back to the side of the pillars.

Aim your portal gun straight at the floor and then fall towards the ground - firing the portal off - and you’ll soar through the air and onto the wide open platform. Proceed up the stairs and through the exit towards the fifth chamber.

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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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