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Portal 2 Chapter 3 Test Chamber 9

From the Portal Wiki

This is the eighteenth level of the game, and the first part of Chapter 3. The level is set within a dilapidated Test Chamber, and requires the player to combine the momentum provided by an Aerial Faith Plate with a Thermal Discouragement Beam and Discouragement Redirection Cube in order to proceed to the next level. The level also reintroduces Wheatley, who was largely absent during the previous chapter.

Portal 2 Chapter 3 Test Chamber 9
sp_a2_sphere_peek.bsp Ceiling Catapult





Contents

Mechanics

Characters

Hazards

Locations

  • Aperture Science Enrichment Center
  • Test Chamber 09 (GLaDOS)

Walkthrough

  • Go around the malfunctioning panels.
  • Use the Aerial Faith Plate and wait for GLaDOS to repair it.
  • Use the Faith Plate again and wait for GLaDOS to recalibrate it.
  • Use the Faith Plate again and wait for GLaDOS to lower the ceiling.
  • Shoot a portal on the ceiling and the other portal on the ceiling above the ledge.
  • Use the Faith Plate to go through the portal.
  • Fire the same portal on the angled panels behind the Thermal Discouragement Beam.
  • Use the Faith Plate to go through the portal.
  • Press the Switch and fire the same portal on the angled panels next to the beam.
  • Use the Faith Plate to go through the portal.
  • Pick up the Discouragement Redirection Cube and place it on the Beam. Aim straight for the wall on the left.
  • Put a portal on the angled panel facing the exit.
  • Use the Faith Plate to go through the portal.
  • Place portals on the wall blocking the Beam. First one on the end of the Beam and the other straight in front of the receptacle.
  • Go in the Chamberlock.

Video walkthrough

  Download demo file