needs some work
This obviously isn't all that original. The game crimsonland is basically this but better, but it also costs mony to get the full version.
One thing I'd recommend is upping the speed. I'm being attacked by zombies or something but I'm not running and they are walking at me pretty slowly. More speed would make it a bit more intense. i.e. more fun
You also need to fix your replay button. The game died when I clicked it.
otherwise the problms are just that it's not been fully developed. Keep going and you could end up with a very good game.