Here is the full list of all 15 Driftwood achievements.
Complete all milestones and challenges
Wear the Suit Top and Suit Pants together
Reach 100 km/h with the Sticks of Butter "wheels"
Break 10 delineators in the map
Finish the tutorial level in under 50 seconds
Crash 100 times
Make it to the end of Eagle Stone Mountain
Start the tutorial with Sticks of Butter as wheels
Crash 50 times
Crash 10 times
Complete the Tutorial
Crash for the first time