Portal Test Chamber 00
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Test Chamber 01
testchmb_a_00.bsp 
This chamber is the first level of the game, it introduces the player to GLaDOS, Portals, the Weighted Storage Cube the Heavy Duty Super Colliding Super Button, the Chamberlock and the Emancipation Grill.
Threats faced
None
Walkthrough
- Wait for the portals to open.
- Walk through the portal, and walk around the Relaxation Vault and through the door.
- A Weighted Storage Cube will drop from the Vital Apparatus Vent, pick it up and place it on the Heavy Duty Super Colliding Super Button.
- Walk through the final door, and into the Chamberlock.