For this achievement alone you do NOT need to finish in first place, just need to finish them. DO keep in mind that you will need to end up in first place in order to unlock all the Dreamworks logo's so if you are a completionist, aim for first place !
There are 6 different challenge types each with 6 courses to finish. Pick any character you feel comfortable with. Personally I found the alternate Skipper the best, but judging from the leaderboard people have set the best times with Donkey.
Star Collectable Races: All that is left on the course are the stars, no power-ups, you can still charge your boost though.
Turbo Races: No stars, no weapons, just boost packs. Keep collecting one boost after the other and it'll be a breeze.
Pure Races: These ones come down to pure racing skill, keep drifting in order to boost your way to the finish line.
Super Star Races: These head-on-head races are one of the easiest challenges.
Precision Races: Only pumpkin and bananas can be obtained. do note that you can use bananas as a shield when you drop them just before a projectile is about to hit you.
Strategic Races: Just Frog Balloons and Shield Potions this time, these challenges are a great way to obtain
Solution for Fear My Roar In DreamWorks Super Star KartzFinishing your first challenge in first place will net you
When you're half way through the challenges this will unlock