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Game is hard on this crappy work PC. every time i click it freezes. In any case if it's as smooth as it plays in these youtube videos its a piece of cake. Establish a solid 3 tower defense to open and sparing use of monkey glue on yellows and pinks while you hoard up to buy your first banana farm at round10 or 11 and focus on upgrading them as well as establishing others to carry you late game when the round rewards are simply not enough to get the necessary final forms for your towers. You must also know the waves that hit you hard, like the first iron balloon wave, the mass camo balloon wave, the mass rainbow wave, ceramic wave and your first moab wave. Invest in the necessary final form towers to combat those respective 'doom' waves right before they hit. It's possible to win on hard with 4 farms on their second to last form as long as you don't lag as hard as i do and can grease the lanes liberally.