Here is the full list of all 14 Roadclub: League Racing achievements.
Go really fast
Become the next Roadclub Master
Lose first place and win a race coming back from last place
Save enough cash
Fully upgrade a car in career
Don't leave a scratch
Win a league race with an RWD car
Consistently dominate the club
Get promoted
Max upgrade power of a car in career
Win a race against 5 opponents
Don't bump any opponents for a whole race
Your career begins
Eliminate an opponent and win any race