easiest way for the 'hard' badge. you want the dumpster, fully upgraded. get a decent launch. hold back before you leave the ramp. now, what you wanna do (while backflipping) is up-and-out flip, superman, up and out, and then spam up down up down to dumpster dive as much as you can. a few pole vaults with dumpster dives might be needed. i got 43000 without groupies doing this. + if it helps :)
after you finish the game, there should be a 'level select' feature. the 100 kill streak is obviously easiest at level 20, however, i'm not planning on playing through the whole game again, just for another chance at it. :(
overall though, 4/5
kinda reminds me of MW2. great game, but over too quickly. definitely needs a dificulty setting and a few more levels.apart from that, i loved it. overall 5/5
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