Portal Test Chamber 18 (Advanced)
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This is the sixth and final advanced chamber of the game. This version is unlocked when the original Test Chamber 18 has been completed.
- Removed some portal conductive walls.
- Pellet launcher has been removed.
- Harder flinging when retrieving the Weighted Storage Cube.
- Platforms lower when traversed though a portal.
- in progress -
Beat two Portal advanced maps.
Beat four Portal advanced maps.
| Vanilla Crazy Cake|
Beat all six Portal advanced maps.