Got the Hard badge on my 141st jump. Just do as many different kinds of tricks as you can to get your multiplier up before hang-gliding while hand-standing for as long as you can, then just keep on pole-vaulting while on the ground. It really helps if you get a perfect jump and/or tap the space shuttle while in the air. The groupies upgrade really raises your multiplier as well, although I did it without it.
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