1. Footstep and some ambient sounds would go a long way as far as immersion goes
2. The shooting feels good
3. When you lose, the game should reset.
4. I had to read the description to understand how to find the mimics
5. I wish that when you couldn't find the mimic, it would reveal itself in some way (doesn't have to be too obvious where it was as not to ruin the game for next round)
6. It was satisfying to kill the mimics!
Great job!