Full list of all 15 Doritos Crash Course achievements worth 300 gamerscore. It takes around 4-5 hours to unlock all of the achievements in the base game.
The base game contains 12 achievements worth 200 Gamerscore, and there is 1 DLC pack containing 3 achievements worth 100 Gamerscore.
Finished every level in Xbox LIVE
Earned a gold medal on each level
Beat a friend in an Xbox LIVE race
Finished Japan level 4 with a time of 1:40 or better
Finished the Japan Levels
Finished the Europe Levels
Run at top speed when you're about to wipe out
Finished the USA Levels
Flew from fan to fan 20 times in a row
Got smashed by 3 hammers in a row
Bounced from trampoline to trampoline 12 times in a row
Swung from rope to rope 10 times in a row
Survived the collapsing bridge in London 5
Got launched through the magic hat in Vegas 5
Popped 5 balloons in a row