use combos like the nuke combo two cannos damage fully upgraded and a rocket damage fully upgraded
when you get far enough into a level you railtowers right behind the other and up grade them to full and just the waves come!
Despite the UI issues, still fun Tower Defense game. Made it through 481 waves on Easy (score 4,856,626,410). Not sure if I have the patience for more of this game than that - ha
This is a fun game, but the user interface is unnecessarily complicated