First, what I like about this game:
The style is very nice, the Z, a walking shadow, the unknown danger in a desert city, with that kind of music on the other side is an interesting contrast and I would raise both my thumbs but:
I think no one can disagree, if I say, that we've seen this game a thousand times before. The gameplay isn't new and I got bored very soon. It seems to me, that even if you wanted to create such a game, it does't fit with the zombie thematic - it's just smashed together and - for me - it doesn't work that way. I don't want to get mean, but it seems to me, that it is no idea, to put the zombie style over any game scheme.
I love zombie games, and I believe, that you could use that style, with another scheme, another gameplay, that fits together with it.