A simple strategy: 1.Get through all the stages and just send units until you have enough money to buy an ion cannon 2. Buy three more ion cannons 3. Go outside and go to a gas station and buy yourself a sandwich or something 4. Now send in wave of super soldiers 5. Get badge :)
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 "Age of War"){kind=icon}
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 "The Endless Zombie Rampage"){kind=icon}
 "Loved"){kind=icon}
 "Necronator"){kind=icon}
 "Bloons Tower Defense 4"){kind=icon}