Animation is solid. Some background wouldn't hurt tough. You dealt pretty good with these sprites. Doesn't have much sense tough, but it could draw a smile to the face. Pretty good, keep the work up, very nice for a first animation.

The game is simple, yet able to entertain for a while...
Performance sometimes stutters, maybe it's just my computer, or the browser.
If you refine this (more effects and stuff), you'll have a very nice and good looking game.
You're going the right way, keep it up.

The story is damn creepy...