I liked it. It was dark and it was immediately clear what I needed to do. Simple FPS that has a lot of potential to grow into something more.
It was a bit too dark for me at times, and sometimes it was hard to differentiate enemies from the bullets they fired. I would’ve liked a bit of contrast between them. Background music, particle effects, screen shake, etc are all other things that could be used or polished more to make the game feel that much better.
Overall, nice little experience.