a detective who has so steal credit cards to buy water? the plot or atmosphere of the game is really messed-up, in a bad sense, not consistent at all, neither "alternative" enough.
the game design is 100% vintage, about trying the only possible combo, love it, as it remains easier than some of the nightmares I had back in the days. Good work!
An interesting option would be to be able to turn off a tower. Why? To make is possible for towers "in the back" to also get some XP before a big wave or boss arrives. And yes, a low quality button would be a great +!
A future update will cover all of that! :)