i'm sick and tired of seeing badges for games that you have to spend hours to beat all X levels. It's boring after lvl 10, all the stages are just the same way. I beg kongregate to not give badges to this type of games (or at least not more badges for the "cover orange" games)
I think there is much to do yet cause you can't kill as much enemies as you confront without losing some cannons. Furthermore, that enemy firing eight bullets in a row at lvl 4 is just annoying, it destroy almost all your cannons and you can't replace them in the next round cause you don't have any money.
In addiction, why is your shield bot destroyed so easily? and why do you restart a lvl with your cannons destroyed when your shield bot have been broken?