If you cant get all castles 1 shot, finish the game and the the black-hole-super-bomb-thingy-that-kills-everything and then beat the game. Keep this comment posted :)
First, buy rocket and do 360s. Earn tons of money till you can buy baseball bat and start hitting coconuts. You can earn up to 100k on one round by using baseball bat.
To do Sparta, buy 3 missile towers, and everything else of gunmen. Then, relax and watch spartans getting kicked on their butt without u doing anything with your mouse.
Pretty easy, yet good. On the one with two owls, move your mouse around the tree, first sideways and then up and down, until you find a spot where both owls disappear.
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