This gets a good rating from me!
Theres blood, zombies and really good damage effects from every hit.
I'd have liked a bigger level or maybe a few different levels but this is still good for a start.
I'd like to see more guns and more blood in the sequel, i'd also have liked to be able to crouch...not sure if it'd help me play the game but i just felt that i wanted to.
Anyway nice job!! Keep it up!