Portal: Prelude Test Chamber 18 (Bonus)
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Test Chamber 18 (Bonus)
challenge_18.bsp 
This is the fifteenth Bonus map of the game. It is unlocked when the original Test Chamber 18 has been completed.
Contents
Hazards
- Cube Hazard
- Fire
Strategy
Portals
- To do
Steps
- To do
Time
- To do
Award requirements
Please note the time challenge's awards are arranged in the reverse order.
| Portals | Steps | Time | ||||||
|---|---|---|---|---|---|---|---|---|
| Bronze | Silver | Gold | Bronze | Silver | Gold | Bronze | Silver | Gold |
| 7 Portals | 5 Portals | 3 Portals | 160 Steps | 140 Steps | 120 Steps | 93 Seconds | 125 Seconds | 155 Seconds |
Video strategies
- To do
See also
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