This game is not worth the time it takes to get the easy badge. 25 combo is ridiculous for "easy". I could see 10. It's a little buggy, resetting my counter without having hit the ground a couple of times, and also did not get bounced off the "miner" units a couple of times even though they were direct hits. Not a bug, but highly annoying is (as mentioned a hundred times by other people) the mouse causing you to "lose focus" if you even look at it.
I do like the concept for this game, and it is satisfying to bounce off the aircraft, but all in all, this game is a fail. Sorry. :(