Here is the full list of all 44 Retrowave achievements. It takes around 40-50 hours to unlock all of the achievements on Windows.
Play 1000 times
Buy VHS Car
Buy the 16th car
Buy the 15th car
Buy the 14th car
Buy the 13th car
Buy the 12th car
Buy the 11th car
Buy the 10th car
Buy the 9th car
Reach $1000000
Buy the 19th car
Buy the moon car
Reach $100000
Buy police beacon
Reach 50.000 score in Hard
Play peaceful mode
Buy neon wheels
Buy the 7th car
Play 100 times
Buy a new paint
Buy turbo
Buy nitro
Reach $10000
Play speed bomb mode
Play time attack mode
Play easy mode
Play two-way mode
Play normal mode
Play one-way mode
Play hard mode
Buy the 6th car
Buy the 5th car
Buy the 86
Buy the 3rd car
Buy the 2nd car
Buy the 8th car
Play your first game
Play 10 times
Reach $1000