Great potential. But Map was confusing, and I was just running around lost :) Might just be me though. But there is my feedback.
No I got past the window. Found the shotgun and shot the window etc. Pushing levers and killing 2 enemies in total. The spider thingie at the beginning and then that bigger dude coming at me.
I just felt I had no idea what the levers did, but I was pulling them. And then it felt a bit maze like. Some better indicators for stupid people like me would be much appreciated :) But I should explain that I am very used to linear experiences so it might just be me.