Level ten. Buy a owl. Wait buy a cat. wait till the owls and cats are about to fight. Use all your cheese on white mice. Then you will get a about 100 cheese and send all brown mice. You beat it.
Easy Money Is once you get 450 coins then go in the 450 safe-breaker and unlock one of the gold one and upgrade the money rate as much as possible... the reason you can do this is because in the 450 there are 2 gold safes and the is a 50/50 chance you will make 1000+ off of the right one.... the top is the most likely to content the money
 "Defend Your Cheese"){kind=icon}
 "Mushroom Madness 2"){kind=icon}
 "Learn to Fly"){kind=icon}
 "Toss the Turtle"){kind=icon}
 "ButtonHunt 3"){kind=icon}
 "Pumpkin Remover"){kind=icon}
 "Storm the House 3"){kind=icon}
 "Kongregate Chat"){kind=icon}
 "Monsters' Den: Book of Dread"){kind=icon}