Nice Start

It seems pretty solid for your first game. The art it basic, and in future projects you would benefit greatly from hiring an artist, but until you can get yourself a rep and some sponsors you will have to do without (unless you are lucky enough to have a friend who will pump out some art for you).

A good idea would be to add a ground smashing attack, because not being able to hit certain zombies makes the player feel disabled. Also, when you move to your death screen, make sure you clear all the objects you attached to the stage, because having the game still running in the background feels sloppy.

Anyways, good luck to you, i'm sure this will turn into a nice time killer, but as it is I probably wouldn't open it again. 6/10 because its incomplete, you have my blessing. (im not religious at all btw) (also, that wasnt meant as an insult) (this is awkward)

nice!

very nice for a first game, however i still think demos are waste of bandwith

The Features are a Yes

Weapons, Levels, Health MediPacks all awsome. I also think you know how it says have fun being a zombie? It should take you to a level where you're a zombie and theres no enemies you just walk around with other zombies just for an easter egg and then in the top right it says like "Ressurect" and that is practically just retry. I donno thats just something to think about. Adding that would prolly boost your score a bit but your the artist and its your choice. Anyways so far good game dude.