Hey, thanks for the message,
For the 2nd massive hallway door, there are two intended ways to get across to the terminal across the hallway:
- Use the MSSIRT's crane as a moving platform, where you can stand on the fix tool as you gently move the crane
- Doubling back through the 2nd room of robots, going through some smaller maintenance shafts up, up, up then through the bridge, and then down and around - if you find a robot leaning against a door which leads into an empty warehouse, you want to turn around, go right, and find another room with a small ramp up to the hallway. If you look up to the ceiling there should be a thin black line dotted along the ceiling leading to it.
For reference here's a rough map of the two paths:
Hope that helps, if not I can record a video walkthrough.
- Peter