Nice start, this can definitely be fun if you expanded on the idea. As others have mentioned, the lack of crosshairs or reticule makes aiming difficult, but that is an easy fix!

Great and well made idea! Although I lost too much time aiming before realizing I could right click, the various hiding place where fun to spot.

Was enjoyable, although I think it would have been better with a crosshair? Maybe it was the intention not to have one to make it more challenging, but I found it a little irritating that I couldn't hit the enemies - maybe I should just get better! Really enjoyed the music, especially when nearing the end.

Bit too bright for my poor old eyes, but other than that it is a cool game, I like it.