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Look to your left as you walk down the walkway and you should see a large walled area leading to a green door. Zoom in and fire off an exit portal over at the wall, now walk down to the end of the metal walkway and look at the wall to your left, you can place an entrance portal here.

Step on through, open the door and you’ll find yourself inside a tall enclosed room. You need a portal on the white wall on the ground floor and the next one needs to be on the wall up and to the left (look for the metal walkway above).

Once you’re on the metal walkway, position yourself so you’re overlooking the floor below and you should notice two patches of usable areas. Place a portal on each and then drop down into the one below you, as you ascend through the second portal, turn to your left and you should notice the light wall on the upper central part of the room.

Quickly place your entrance portal here, so as you descend through the portal below, you’ll be catapulted over to the walkway, walk through the door/fore field and head on through the door to the next part.


Trophy/Achievement Icon

Ship Overboard

iscover the missing experiment

Trophy icon

If you go to the top floor initially and go inside the office space, look for the hidden door in the left corner of the room. Open it up, then hit the remaining three door buttons to trigger the ‘Door Prize’ Achievement Trophy. Also, if you walk outside into the shipyard, you’ll also be awarded with the ‘Ship Overboard’ Achievement/Trophy! Bonus!

You need to position the exit portal higher up above the walkway before dropping back down towards the ground. The extra height is needed so you can whizz straight over the locked gate and over to the elevator that signals the end of this section.

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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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