Very cool! I played Midnight Shift and now this and I really think they both offer different things that could be incorporated to make a more terrifying game :)
I really liked the way MS looked but this one did a better job of building tension. It had a slower build to the introduction of the mannequins and did more subtle things.
All around great job!
Also I didn't find the secret ending. It appears I did pick up 3 things that weren't fuses though. I don't know if that's how you get it and I missed some or needed to do something else or what. I may have to mess with it some more and see if I can figure it out.