level 11 no gold bought

I made it to level 11 with buying extra gold I too wasted my gold buying armor…How to destory the helli is by shooting its propelers. There is another level I thought was impossible too but you I jst need to re adjust my strategy….Im now stuck on the rescue mission but I almost won I had 1 guy left. Should win it soon great game wish there were more weapons available to buy with cash or a way to trad cash for gold I have over 20,000 and no money available guns.

whowhowhodoctorwho about Frontline Commando