Keep on eye in the ballon pop score then press "Esc" ASAP and upgrate bomerang /plasma /darts then again bomerang, plasma, darts and another darts again (7 upgrates so far)... that is the best you can do... do the rest as u like and enjoy it the game.
I did last achievment in my first hour, top speed 80, i was just trying to reach one gate with a small or midium ramp but i had too much speed so i fly away ^^. You don't need a big ramp just enough speed. My best score 17M, my second best 9M i never survive more then 30 seconds. Tip: Do 1/4 inch waves all time 2 to 4 times by second to get speed!! SHAKE IT!!! ^^
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