Great Game!!!
Graphics: It doesn't have to be super-duper-ultra snazzy to be a good game. The stick-figureness is superb for this kind of genre. While it's not eye-catching, it definetly suits the game, and is therefore excellent.
Style: I love the style of this game. It's not your typical kind of shoot-em-up, which makes me want to come back for more. In fact, I added it to my fave list.
Sound: The mid-evil (spelling?) music very much suits this game, however, I would suggest adding a couple of other tracks to make it not so repetitive. The sound effects are excellent.
Violence: Shooting arrows and blood, does it get any better than this for this type of game?
Interactivity: It's a game, I think the interactivity speaks for itself.
Humor: None.
Overall: Great game, great sound, great style, the only thing I might suggest, unless it's in here and I just didn't get far enough, is power-ups for the bow (like shooting 2 at a time or something) and a way to restore some health from time to time.
Excellent game. Kudos!