Oh yeah,helpful tip: in order to destroy helicopters roar at them. in order to destroy a plane get the bug legs and jump onto the planes. and this is what i did a couple times, I held down the space bar so the monster goes back and forth to destroy some buildings in an area.
 "Epic War Saga"){kind=icon}
 "Days of Monsters"){kind=icon}
 "Doodle God"){kind=icon}