Power balance on the game is horrible. I've gotten to lvl 4 on my first try and was defeated so I went back to lvl 1 to gain more exp. Was defeated on the first wave. Does the amount of experience change the bugs HP, because I'm finding it impossible to beat lvl 1 anymore.
So much of the game is just dumb luck getting a water element right off the bat, all the other elements were worthless. Fire added range? Air slowed them down for about 2 seconds. Earth added damage but went slower. A good attempt, but not for me.