Felt like a mixed bag with this.
I found the way you kept it with the song and the general art was good. As were some of the bullet animations.
But the character animations seemed... stiff. And repetative.
For the limited time you had on it, it was good. But I think you could have done tha character animations a lot better. They just seemed rushed (Which I guess they might have been) and take away from the whole thing.