Nice game, you manage to cram a lot into one's week worth.
I liked the pixel art and enemy variety. I also appreciated that gamepad is supported (but not control?)
On the cons side, the jump is difficult to control (too fast, and would deserve a variable jump height, especially when hitting enemies in the air).
I also stayed mostly on the ground floor and it was mostly fine except for a few rats that stayed up. Maybe provide an incentive to go higher the tower?