Good way between hard and easy till lvl 30
I liked your style between hard and easy. If you buy the next weapon upgrade each round, it's not too difficult to blow the spams and whatever up. But when you lose attention, thousands of them crash into wade. xD Great game. But when you reach lvl 30 it's too easy, because you should have enouth money to buy 10-30 BednBblasts each round, so you can press space instant. But your game rulz, no question :)