Have seen - you can after the elevator jump skip do it a little bit other to go in the door, so you run correctly to the next section. And the room with the rotated bridge - you can run over the complete section in one go without to stop, its a risk, but hey, speedrun. Oh second to last room, you can skip a little bit, when you drop down a little bit others - i believe 15:03 or shortly before.

Look, just today I've made even faster run. I'll post it shortly.

Nice and i must overhaul my guide, the falling sequence at the end is not in the time limit.