I don't understand why people say getting the hard badge is so simple. Using maxed out bombs means that for the first 3/4 of the map, its pretty straight forward, but after that you run out of cash and the remaining ships get through. Maybe I'm doing it wrong?
Mate, noone is going to buy your game. It's not awful, but this website happens to have a number of free games, which we will play instead. Not to mention, many of them are better than this.
I managed to get the flight path almost horizontal, at its fastest speed, and left for a while.
I came back and found it ended after 57 minutes, and collecting $87 million
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