Three out of Five. It needs a bit more information on monster health, a stat bar under or over the monster would be good. The "Ultimate Tower" is not ultimate since it fires so freakin' slow. The tower graphics are interesting but tend to overlap making it difficult to click and upgrade towers as the graphics change and get larger.
Good game. I encountered a bug or two that will hopefully be fixed with the next release (?). The various special weapon and armour combinations are quite nice. I gave it a 4/5 due to the bugs.
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 "Defender"){kind=icon}
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 "Monsters' Den"){kind=icon}
 "Feudalism"){kind=icon}
 "Protector"){kind=icon}