Portal 2 Chapter 3 Test Chamber 10

From the Portal Wiki
Jump to navigation Jump to search

Portal 2 Chapter 3 Test Chamber 10
sp_a2_ricochet.bsp Ricochet

Chamber number 1.pngChamber number 0.png

Test Chamber Infobox previous.png
Test Chamber Infobox next.png
Test Chamber Infobox Portal Guy.png
Chamber progress 1.pngChamber progress 0.pngChamber progress slash.pngChamber progress 2.pngChamber progress 2.png

Portal 2 Chapter 3 Test Chamber 10.png
Chamber icon cube dispenser on.pngChamber icon cube button on.pngChamber icon cube hazard on.pngChamber icon water hazard.pngChamber icon laser sensor on.png
Chamber icon laser redirection on.pngChamber icon faith plate on.pngChamber icon fling enter on.pngChamber icon fling exit on.pngChamber icon dirty water.png

This is the nineteenth level of the game, and is set within a dilapidated Test Chamber. This level requires the player to utilise their knowledge of Thermal Discouragement Beams, Aerial Faith Plates, Discouragement Redirection Cubes and momentum in order to complete the test. The Test Chamber also introduces the ability of the Discouragement Beam to affect the position of Panels, and thereby allow access to otherwise unreachable areas.






  • Aperture Science Enrichment Center
  • Test Chamber 10 (GLaDOS)


  • Shoot a portal at the bottom of the gap between you and the Weighted Storage Cube on the spinning panel.
  • Turn around and fire the other portal on the wall facing the Storage Cube as close to the ceiling as you can.
  • Go through the portal in the gap.
  • Pick up the Storage Cube and drop down to the bottom of the ledge.
  • Go through the portal and use the Aerial Faith Plate.
  • Place the Storage Cube to block the Thermal Discouragement Beam.
  • Drop down and use the Faith Plate again. Shoot a portal at the wall near the Switch.
  • Press the Switch and wait for the Discouragement Redirection Cube to get all the way up.
  • Pick up the Redirection Cube and drop down to the right.
  • Take the Storage Cube out of the way and replace it with the Redirection Cube. Aim the Beam for the two panels at the wall on the other side.
  • Place a portal at the same wall.
  • Take the Storage Cube and drop down. Use the Faith Plate.
  • Place the Storage Cube on the button.
  • Go in the Chamberlock.

Video walkthrough

Download Download demo file

Related achievements

Complete Test Chamber 10 in 70 seconds


Main article: Portal 2 soundtrack

I Saw a Deer Today by Aperture Science Psychoacoustics Laboratory [3:13] | Download Download | Play icon.png Play