Found a bug ! (Or a feature, I don't know). If you accelerate your lawn mower then press escape fast, you keep the berserk bonus. It's the reason lawn mowers are the most cost effective mini game.
Easy, need difficulty setting and badges (finish the campaign without tools maybe ?)
Need a boss fight.
@H4wx : sure but look at the price, it adds up.
Call me Bug Master ! Don't know how i did this but when I kill a boss, it does'nt explode, it just stay there, shooting and giving money. And when you reach the next level, it's still there, giving you money ! Easy way to buy all items in the shop but quite a let down if you want to play "by the rules".
To kill the baron : Use something to blast his focus away ! When his focus is down to zero, he will use an ability to get it to 100, doing huge damage to himself in the process. If you don't have anything to wear down his focus, go level up on training fights or respec to et one.
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 "Super Can Knockdown"){kind=icon}
 "Folds -- Origami Game"){kind=icon}
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good :)