Here is the full list of all 20 Vienna Automobile Society achievements.
Race on every track.
Race 50 laps.
Race 1000 laps.
Race 305 laps.
Start a race in every hour of the day.
Complete your first race.
Complete your first online race.
Win an online race.
Win 20 online races.
Crash 20 times.
Spin 20 times.
Win a four player race starting in last place.
Complete the tutorial.
Race in the rain.
Complete 20 offline races with four cars in one sitting.
Race 100 laps in practice mode (one player).
Finish a four player race without anyone crashing out.
Finish a four player race without anyone spinning, colliding, or crashing.
Have 100 car-to-car collisions.
Finish 300 races.