There's no plot to the game, at all.
Please put a title screen, don't just drop people straight into the game with no description.
There's many flaws in this game:
Jumping doesn't feel right
What do those "enemies" do? the only thing they do is get knocked off, and they only fall to the bottom of the screen and stay there.
If you fix a lot, I feel this game MAY stand a chance at not going to the graveyard.