A nice little game, and the concept is really fun. You can make this game way more fun by adding:
- Some effects (maybe in dark room, and player can see only a little bit around him)
- More type of ghosts
- Maybe get some chance of pickup to level up your weapon after killing the ghost
- An indicator to show the range that the ghost will takes damage. Right now, sometimes shooting the ghost doesn't kill it or trigger it.
There's still room to improve, wish you the best on the jam