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This is the final ‘proper’ chamber for this chapter and it’s - naturally - one of the slightly more complex ones. Once you’re done with this, we’ll be on to the ninth and final chapter!

Before you even enter the chamber properly, the path ahead of you will collapse, so use the Conversion gel to cross the gap.

Use your portals to transport you over to the blue gel dispenser at the far end of the room. Once you're there, set up the transportation beam so it's passing through the back wall (under the blue gel dispenser) and across the pit. Hit the plunger and once the gel is passed the grating by your feet, cancel it so the gel coats the floor.

Now reinstate the beam, hit the plunger once again and now use the gel to bounce yourself up into the beam. With the gel behind you, jump out of the beam once you’re safely over the chasm and stand on the red switch to reverse the beam’s direction of travel.

Keep standing on this switch until the gel has passed through both portals (and is heading towards the transportation beam device itself). Make a quick mental note of the three turrets behind the glass to your right along with the square light wall panel up and to their left.

Once the blue gel is near the beam device, step off the switch (to send the gel forwards again) and - very quickly - set an exit portal up on the left-hand wall near the turrets. The beam and gel should now be passing directly over the turrets heads.

Once the gel is around 3/4 over the turrets heads, cancel the beam and the gel will fall down, taking out all three turrets, allowing you to safely hit the button at the other side of the glass. Hitting this button will reveal a slanted wall panel near the entrance to the room.

Set a transportation portal on the floor by the entrance and as you're rising towards the ceiling, keep your sights aimed at the slanted wall panel. Once you've reached the top, get rid of the beam and you'll drop through, over the glass panel and the velocity gained will take you into the blue gel and right to the 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

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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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