Lots of promise! However, it is just far too easy to be engaging. I don't know if there was a difficulty slider that I missed or what.
I found the zombies to be incredibly slow, I could walk the normal pace and they'd never catch up with me. Negating the need for the shotgun and thus removing the risk factor when killing a zombie. Even when there were multiple of the undead creatures I found it to be nothing more than an inconvenience at worst.
The flashlight recharges too fast to be a concern and again there really isn't any reason to be afraid of the zombies.
Again, maybe I played on easy mode and didn't realize it, that's just my experience when booting it up the first couple of times.
Perhaps, instead of a recharging flashlight, you need to get batteries from the zombies, taking them from their head lights. That way, you would have to choose between having light or having ammo. idk, just a suggestion.
I'd like to reiterate, a lot of promise, I don't normally comment.