Portal 2 Chapter 4 Test Chamber 20: Difference between revisions

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This is the twenty-ninth level of the game, and is the first level to be set within a fully-repaired and functional [[Aperture Science]] Test Chamber. This level requires the player to combine precise [[Portals|Portal]]-placement and multiple [[Thermal Discouragement Beam]]s in order to proceed.  
This is the twenty-ninth level of the game, and is the first level to be set within a fully-repaired and functional [[Aperture Science]] Test Chamber. This level requires the player to combine precise [[Portals|Portal]]-placement and multiple [[Thermal Discouragement Beam]]s in order to proceed.  


== Hazards ==
== Contents ==
 
=== Mechanics ===
* Laser Receptacle
* [[Discouragement Redirection Cube]]
* Laser Relays
* Light Strip (blue, pink)
 
=== Characters ===
* [[Chell]]
* [[GLaDOS]]
 
=== Objective ===
* Complete GLaDOS' Test Shaft (Test Chamber 20)
 
=== Hazards ===
*[[Thermal Discouragement Beam]]
*[[Thermal Discouragement Beam]]



Revision as of 12:46, 15 February 2022

Portal 2 Chapter 4 Test Chamber 20
sp_a2_triple_laser.bsp Triple Laser





This is the twenty-ninth level of the game, and is the first level to be set within a fully-repaired and functional Aperture Science Test Chamber. This level requires the player to combine precise Portal-placement and multiple Thermal Discouragement Beams in order to proceed.

Contents

Mechanics

Characters

Objective

  • Complete GLaDOS' Test Shaft (Test Chamber 20)

Hazards

Walkthrough

  • Walk over to the Beams and place a portal on the wall on the left-side where the Beam ends.
  • Place the other portal to the column facing the three Receptacles.
  • Pick up the cube that is already redirecting one of the Beams. Place the cube in front of the portal, so the Beam activates the middle Receptacle.
  • Pick up the other cube and place it over the beam coming from the ceiling. Aim it at the Receptacle on the right side.
  • Go to the Chamberlock.

It is also possible to complete this chamber without placing any portals if you position the cubes correctly and use a cube and quickly move the cube from side to side. If you do it correctly, holding down the strafe right movement key (default D) the door will open for a split second, letting you slip inside. This is a more difficult solution to the puzzle so the basic solution is recommended.

Video walkthrough

Download Download demo file

Music

Main article: Portal 2 soundtrack

Triple Laser Phase by Aperture Science Psychoacoustics Laboratory [4:15] | Download Download | Play

Trivia

  • This is the first chamber to be completely cleaned after the destruction of the facility.