I can't figure out what to do next - I can't find a way past the mousetraps in the building, and I can't find the "tube of lube". I like the style so far though.
My main feedback is I think the controls would be improved if you always strafe while holding the shoot button. I always press the strafe button every time I shoot anyway. If you wanted to change direction you could easily stop holding the button for just a moment.