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