The art is so awesome !!!
Nice little game, if you polish it could be a fantastic little experience. I suggest you hide the mouse in the gameplay scene and make the art for UI elements. Also adding audio would be great. If you want to make the gameplay more chaotic, now if you hit some trash with your side sometimes its shoots off to the sides and when they hit the ground off-screen you lose one life, but maybe making them bounce with the side walls could be fun.
Also, you can try my game if you want, it just takes 5 minutes ;)