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Test Chamber 11
testchmb_a_11.bsp
This chamber is the twelfth level of the game. In this level, you will upgrade your Handheld Portal Device and thusly be able to shoot orange portals, as well as blue ones.
Hazards
Pellet Hazard
Hazard Water
Walkthrough
Proceed up the stairs and place a portal on a wall or on the floor.
Wait for the orange portal to be generated behind the platform with the switch.
Press E to activate the switch.
Place your portal on the wall behind the door that opens upon activating the switch.
Wait for the orange portal to be generated behind you.
Proceed through the orange portal.
Place your portal on the piece of wall where the pellet collides with it (marked with a circular piece of scorched wall)
Wait for the orange portal to be generated opposite to the pellet catcher.