Full list of all 21 Barro GT achievements. It takes around 0-1 hour to unlock all of the achievements in the base game on Windows.
The base game contains 14 achievements, and there are 5 DLC packs containing 7 achievements.
Race on Race Track #15
Race on Race Track #16
Race on Race Track #17
Race on Race Track #18
Race on Race Track #19
Race on Race Track #20
Race on Race Track #21