Just played it, but I seem to be stuck. After getting the screwdriver I unscrewed one of the screws on the vent, but I couldn't reach the other one. After a bit of jumping I got it, but then I couldn't find anything else to interact with. Was I just being dense, or was it a bug?
I love the atmosphere and I would really like to finish it! Also I can't believe you got "LMB To Shoot" to star in your game, that must have cost a fortune! :D