Well, i have some TIPS, for those who play infectonator blablabla...
Frist of all, never ever buy Bombs, because these are weaks, and when you can, just earn money, don`t destroy cityes, Okay, now Just Get all Stats to 17-18, so them you zombies will be invincibles, ONLY after that, Up your Special Zombies, Like M.J And Venom, And chiken dude, these are good, the rest is not. well, these are the tips, if you have any question, make it!.
These tips aren't of use to me anyway, but thanks. I used bombs to get rid of the first boss I encountered. And I upped the stats as much as possible (all of them over 20 or so). I don't agree with you, since Tank is extremely useful. He gets rid of enemy agents who keep on gunning down your zombies. The Colonel is useful too and MJ provides back up zombies. Venom came too late in the game to make an impact.
I also suggest that one gets the extra clicks as soon as possible.
Does anybody think it would be better if this forum board was no ap, I don't even know why I brought that up, but anyway good tips it helped me a little.