the gun is terrible, the zombies are boring and his is not particuarlly scary either. decent attempt and i like the plot but it needs a bit more refinement.
eh it's a start, you might want to draw the parts with a smaller pen though to make it look better. Add more of them maybe in a menu system, those kinds of things.
Very interesting game you have here good retro feel to it and game play is amusing, a bit of information on what the items in inventory are would be good but not bad