You said MSPaint, so I was expecting something bad. These graphics surpassed my expectations incredibly. The graphics actually look really neat-o! I almost commented about the animations, but then I realized the game kind of adopts this awesome cartoony feel, something that we haven't seen done well in vampire lore since the 90's. It looks awesome, keep up the good work!
The only complaint I have is that the menu icons use a generic text that isn't outlined, and the text doesn't stick out. You should modify the text on them to match more with the text that states your level, or at least recolor the text on them so that it doesn't blend in so much with the graphic. There's also the fact the character walks pretty slow, but it's something I could get used to. The low range of his attacking isn't really an issue due to the fact I'm guessing it's a lower leveled weapon, and higher-leveled weapons have more range. (am I right?)
I can't really comment on sound (if there is any) since my speakers are off, and its kinda late. So I'll get back to that later.