Toy Defense Game

I'm playing this game called Toy Defense. It's a pretty cool low tech game from 2012. I give it 5 stars. It cheap too.

I got a delivery....

Anyone playing? I need help getting gold on level 16. It's called insanity.
I'm doing the same thing and expecting a different result. My base always gets hit during round 10.
I know of one cheat, but I don;t cheat. It make my purchase worthless.

I made it to round 15 twice using 6 flame throwers. But, due to the lack of cannons, and weak air defenses, my base is either getting hit by a tank or blimp. That's right. Little green plastic soldiers, and WWII.