oogamo , then it would be easy to do, for weaker people when they attack for ages... their wrists may hurtso its part of the challenge :) (sorry for double post)
I have eddited my course, its on my profile.. REMEMBER ONLY TO TAP FOWARD A LITTLE BIT
this time there is two routes, and u goto find the two vehicles that work them ;) (only one can collect all the stars)
 "Free Rider 2"){kind=icon}
 "Body Ladder"){kind=icon}
 "Nano War"){kind=icon}
 "Z-Rox"){kind=icon}
 "Soul Core"){kind=icon}
 "Use Boxmen"){kind=icon}
 "siftheads 5"){kind=icon}
 "Sniper Assassin 3"){kind=icon}
 "Four Second Firestorm"){kind=icon}