I like the spooky art style and the idea that you incorporated into the game.
It was original, and I think could make an interesting scary game. I really liked the art, as it was a somehow cute and scary looking style, making it very original.
I think it would have been good if you could have incorporated a reason that the mouse kills the enemies, and sometimes I would fall asleep behind a tree. I couldn't fight off the monsters, so I had to restart.
Overall, I think it has a lot of potential for a spooky 2D horror game.
If you don't mind, I would appreciate if you could look at my game. (: