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Part 8
Portal

Part 8

Complete the Portal Test Chambers 07 and 08 puzzles, including the energy ball redirection and using the Aperture Science Unstationary Scaffold.

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Complete the Portal Test Chambers 07 and 08 puzzles, including the energy ball redirection and using the Aperture Science Unstationary Scaffold.

Walkthrough
  1. 1
    Enter the first room and check the far right corner for a Commentary Node.
  2. 2
    Proceed into the test chamber where an energy ball is being shot. A receptacle is nearby.
  3. 3
    Shoot a portal at the orange light on the ceiling above the receptacle. The energy ball will travel through the portals and into the receptacle.
  4. 4
    Run to the piston to activate the elevator. Note that you cannot create portals on dark surfaces.
  5. 5
    Exit to Test Chamber 07.
  6. 6
    To the right of the stairs is a panel with two symbols.
  7. 7
    After descending the stairs, look up and to the left to find a Commentary Node floating on a platform; activate it.
  8. 8
    Look to the right to see a black mark on the wall where the energy ball has been impacting. Shoot a portal there.
  9. 9
    Shoot another portal at the orange beam of light immediately to the left of where the energy ball enters the first portal.
  10. 10
    The energy ball will travel through the portals, bounce off a wall, return through the portals, and hit the receptacle.
  11. 11
    The computer will instruct you to use the Aperture Science Unstationary Scaffold to reach the chamberlock.
  12. 12
    Look at the walls near the scaffold; they are black and you cannot shoot portals on them. However, there is a small section above the scaffold where you can shoot portals.
  13. 13
    Shoot a portal on this section and walk over to the orange portal.
  14. 14
    Look into the orange portal and wait for the scaffold to come underneath, then jump in.
  15. 15
    Wait for the scaffold to reach the other side and jump into the chamberlock.
  16. 16
    Exit to Test Chamber 08.
  17. 17
    Head into the small anteroom and check the panel to your left. It displays symbols for "don't drink the water" and "don't swim in the water."
  18. 18
    Head into the larger room. A Commentary Node is located in the doorway.
  19. 19
    From the grating you are standing on, look to the far side of the room and then to the left to see where the energy ball is hitting the wall. Shoot a portal there.
  20. 20
    Immediately after the energy ball goes through the portal, look for the orange beam of light to its left and shoot another portal there.
  21. 21
    The energy ball will pass through the portals, bounce off a wall, return through the portals, and hit the receptacle.
Tips
  • You cannot create portals on dark surfaces.
  • The Commentary Nodes provide developer insights into the design choices for the puzzles.
  • The alarms and flashing hazard lights were disabled for safety reasons, as they agitated the high energy pellet.
  • The Aperture Science Unstationary Scaffolds originally ran on electrified tracks but were changed to run on immaterial beams of light to prevent players from bypassing puzzles.
  • The consequence for touching the chamber floor in Test Chamber 08 is death and an "unsatisfactory" mark on your testing record.

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