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DOOM 3 Hints
How can I make it through the service bridge route?
1 of 8: Pressing "Extend Service Bridge" on the control screen will extend the service bridge that crosses the gap to the north.
2 of 8: Move across it and the following bridges to make it to EFR Junction 1.
3 of 8: After a few monster battles, you should come to EFR Substation 2. Look for a ladder to climb in it (it's in an alcove that opens as you explore the room).
4 of 8: Follow the conveyor walkway along until you come to a ladder leading down into EFR Substation 3.
5 of 8: SECRET: When you go for the security armor in substation 3, the northern wall lowers, allowing you to follow the path inside it to the EFR Pressure Station. This is technically optional, but who would want to pass up the opportunity to get a plasma gun and some cells?
6 of 8: Take the service bridge leading west from EFR Substation 3 to get to the EFR Master Valve.
7 of 8: Climb a ladder in the valve area to get to security locker #064, whose combo you could have found in a PDA earlier. When you're through looting or skipping it, head north to EFR Junction 5.
8 of 8: From there, all you have to do is move into EFR Junction 6, where the two paths converge.
