Very interesting concept. I love that you made the graphics by yourself. Unfortunately, this will not be rated in this game jam... Would have been really nice to have some music or at least sound effects. But that's due to the time limit.
Here are some points that should be improved:
- Jump height, as soon as you fall down, you are stuck at the lower level. You can't reach the higher level at all.
- The aiming is off. It's a little higher then the mouse curser which led to destroying the walls when I aimed at something different.
- I don't know why I loose when the monsters are in the room but not touching me. I'm totally save, but I loose.
I hope this feedback helps you improve the game.