I quite like the idea, but I think there are some annoying tidbits.
The sound is too high pitched, and it ends up becoming annoying (especially with fast firing weapons).
The art style is really nice, and I like the animations, but the lighting is a little flat and the enviroments can get confusing.
All in all, its still good and I recommend it, just needs polishing the other parts of the game to the same level as the hand drawn elements and gameplay.