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Test Chamber 02
testchmb_a_01.bsp 
This chamber is the third level of the game, it grants the player the ability to use the single-portal version of the Handheld Portal Device, allowing them to create blue portals of their own.
Hazards
None
Walkthrough
- Proceed through the door, down the steps and position yourself by the window.
- Wait for the Portal Device to fire a portal at the nearby wall, walk through the portal.
- Jump down into the pit and acquire the Handeld Portal Device from the center pedestal.
- Fire a portal onto a nearby wall and walk through it. Once through, proceed to the chamberlock.
