I understand you are going for a tower defense style game here, but there are a few features that hurt the style. First, the reload time is long regardless of the usefulness of the weapon. Also, you should be able to switch a bit faster. Second, the weapons feel nerfed so that the best ranged weapon is the AK, but there are no other decent ranged weapons. Third, your survivors apparently are part of the spray and pray category of shooters. I would expect the strength of their fighting skill to determine their actual abilities. But i felt there was nothing of the sort.
All in all though it was enjoyable. A bit of a story line other than survive would probably help separate it from the other zombie defense games too.
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