Portal Test Chamber 18 (Bonus)

This is the sixth Bonus map of the game. It is unlocked when the original Test Chamber 18 has been completed.

Hazards

 * High Energy Pellets
 * Cube Hazard
 * Goo
 * Turrets

Strategy
{{Spoiler|block=yes|

Portals
- in progress -

Steps
- in progress -

Time
- in progress -

}}