Good idea isabelinha56, just don't know if I have the money available to upgrade 1 or 2 snaptowers and boost towers enough... because I need high level anti-air towers for the waves after :P
I use spread machine gun (three-way) + decoy (second level, do the first level with just a spread machine gun, then next level add a decoy), then I add sky minefield and in the end damage amp :-) easy!
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