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DOOM 3 Hints
The lights went out in Maintenance Area PD1!
1 of 4: Then you'll need to make some light of your own in order to see where you're going.
2 of 4: You should've gotten a device for that at the beginning of this area.
3 of 4: Bring out your flashlight (F key) and use it to find your way to the Underground Garage.
4 of 4: Fortunately, the main lights will come back on when you reach the door to the garage.