Here is the full list of all 28 Super Woden GP 2 achievements.
You've won your first race.
You reached 300 Km/h
You reached 200 Km/h
You bought your first car.
Welcome to Super Woden GP 2.
You have 5 cars
You have 10 cars
You have 25 cars!
You have 50 cars!
You have... 100 cars.
You've earned 10 Stars.
You've earned 25 Stars.
You've earned 50 Stars.
You don't like to wash the car.
You have washed your car.
You have driven more than 100 kilometers.
You have driven more than 500 kilometers.
You have driven more than 3.000 kilometers.
You have driven more than 5.000 kilometers.
You've won the World Championship.
Win your first Rally
You've changed the oil.
You have completed the normal route with one credit.
You have completed the hard route with one credit.
You have visited the music room.
Install an upgrade for the first time.
You have won the 400s World Rally Championship.