It was ok.
Still rough around the edges and I foresee balance issues with giving people unlimited ammo with any weapon aside from the pistol. Another thing that could be done is to have the price of healing go up with each use of it instead of remaining constant. To help out with the limited ammo, how about giving a limited use special bullets that are twice as powerful. There is also a problem with the lifes system. Having the person reserect with all the zombies on top of them and have them kill him once more without a chance to re aim is unfair. Give the player at least one second where he can't shoot or be hit to re-position himself.