Portal 2 Chapter 4 Test Chamber 20: Difference between revisions

Portal 2 Chapter 4 Test Chamber 20 (view source)

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-It is also possible to complete this chamber without placing any portals if you position the cubes correctly and do a "multiple lasers at once via less redirection cubes" trick. This is a more difficult solution to the puzzle so the basic solution is recommended.
+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 ==