I like it.
Well I've basically said my opinions to you on MSN already or they've been said in earlier reviews.
Graphics - The old skool style suited the game but small things could be improved like animation and maybe a nice background.
Style - The game was definately quite unique and had your own style.
Sound - Good song but it doesn't really fit in with the theme ;) You should also make it loop so that it doesn't just end. Another idea would to add shooting sounds and stuff.
Violence - Mindlessly shooting shit is great fun but maybe the death animation could be a little better than just dissapearing.
Humor - The game made me roffle my waffles, I'll give you that. I like the simplistic character and the song was quite funny. :D
Overall - Nice game, well programmed and much better than I could do, but could do with a few improvments, but I'm sure they'll be in the next version ;)
p.s Remember what I said if you need helpwith graphics? :)