Very fun game. I agree with what the others say. The allies are not much help becuase there are not enough of them or they die too quickly. Also, the upgrade system could use some revamping. It's hard to know which upgrades stack. Additionally, if you don't select an upgrade during one upgrade period it may not show up in the next period. Lastly, is there a weapon for the "3" slot. Is it hidden or did I miss it? Other than that, very fun game!