Holy Crap
I really enjoyed this game, and I believe we did the exact same thing when we got the gravity boots, XD.
Excellent work, though I can see a few flaws. The art was...okay. Good flow and syncing, but lacked a real depth. Still, it worked alright with your style. As for sound, the music and sound effects were synced in well, but the voice acting for alucard was very lacking. The librarian sounded almost perfect to the game, though.
Excellent work, just needs a mite bit of polishing.