Portal Test Chamber 17 (Advanced)
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Test Chamber 17
testchmb_a_13_advanced.bsp 
This is the fifth advanced chamber of the game. This version is unlocked when the original Test Chamber 17 has been completed. It has the extra challenge of replacing the Companion Cube with a spherical replacement, harder directing of the Pellets into Pellet catchers, as well as an extra flinging section near the end.
Hazards
Walkthrough
(Coming soon)
Video walkthrough
Related achievements
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Cupcake Beat two Portal advanced maps. |
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Fruitcake Beat four Portal advanced maps. |
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Vanilla Crazy Cake Beat all six Portal advanced maps. |