This was fun. A few notes:
I think the game is held back slightly by only allowing you to turn in what seems to be 90 degree increments. I often had to wiggle around and move back and forth to shoot an entity properly. Maybe having additional keys, like q and e, for more fine control there might be nice.
I sometimes felt like the environment reverb/echos were a little bit loud and made spatial information harder to track.
But the sounds were excellent in my opinion, and it was a fun time overall.