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Test Chamber 01
testchmb_a_01.bsp
This chamber is the second level of the game, it introduces the player to the concept of portals that change location, with a simple puzzle based around this concept.
Walk through the portal and retrieve the cube; return to the pit area with the cube.
Wait for the portal to show the Heavy Duty Super-Colliding Super Button. Take the cube through the portal and place it on the button. Return to the pit area.
Wait for the portal to show the exit door. Proceed through the portal and then through the exit door into the Chamberlock.