Nice game, the concept is interesting and the art is pretty well done.
There are a few minor things that I only figured out by a lot of experimentation, maybe consider making them more clear:
- At first I did not know you can shoot by clicking, maybe mention it in the text
- The game is way more enjoyable to play in fullscreen, I discovered that by accident
- I could not figure out what "save" means
Other than that, good job!