Portal 2 Chapter 8 Frankenturrets

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Portal 2 Chapter 8 Frankenturrets
sp_a4_intro.bsp Test

Chamber number 0.pngChamber number 1.png

Test Chamber Infobox previous.png
Test Chamber Infobox next.png
Test Chamber Infobox Portal Guy.png
Chamber progress 0.pngChamber progress 1.pngChamber progress slash.pngChamber progress 0.pngChamber progress 1.png

Portal 2 Chapter 8 Test Chamber 01 (Intro).png
Chamber icon cube dispenser on.pngChamber icon cube button on.pngChamber icon cube hazard on.pngChamber icon player button.pngChamber icon water hazard.png
Chamber icon fling enter.pngChamber icon fling exit.pngChamber icon turret hazard.pngChamber icon dirty water.pngChamber icon blades hazard.png

This is the forty-sixth level of the game, and takes place within an Aperture Science Test Chamber. This level introduces the Frankenturret, and does not contain any significant Portal-based challenges.




  • None



  • Frankenturret 'Dedicated' Chamber
  • Test Chamber 01 (out of 01)


  • Go through Wheatley's Test Track.


Frankenturret Chamber 01

  • Go along the catwalk until you reach a small room. On the bottom corner of the room is a broken vent. Fire a portal through it and place the other portal on the wall in the room and go through it.
  • Turn left and go along the catwalk.
  • Go in the elevator and wait for the doors to open.
  • Go along the catwalk and enter the chamber.
  • Pick up a Frankenturret and place it on the button.
  • Wait for the exit to open.
  • Go through the door and along the catwalk.

Frankenturret Chamber 02 (numbered 01)

  • Push the Switch and fire portals on the wall next to you and to the wall behind the button. Go through the portal.
  • Go through the door.
  • Walk through the opened walls and solve it again.
  • Go in the Chamberlock.

Video walkthrough

Download Download demo file

Related achievements

Dual Pit Experiment
Dual Pit Experiment
Do the same test twice
You Made Your Point
You Made Your Point
Refuse to solve the first test in Chapter 8


Franken Turrets by Aperture Science Psychoacoustics Laboratory [4:08] | Download Download | Play icon.png Play
TEST by Aperture Science Psychoacoustics Laboratory [6:14] | Download Download | Play icon.png Play