Thanks! Like I said in the description, it's based on a real experience I had when I was woken up by track maintenance, which scared the heck out of me.
The sound design was the part that was the newest for me, so I'm glad to hear it worked well. The only real sound I needed to edit properly was the sound of the machine, and that just really needed to be loud and disorientating, so it wasn't too difficult.
Thanks for the feedback!