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