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 #14
Race on Race Track #13
Win on race track #12
Win on race track #11
Win on race track #09
Win on race track #10
Win on race track #08
Win on race track #06
Win on race track #07
Win on race track #05
Win on race track #03
Win on race track #04
Win on race track #02
Win on race track #01
Race on Race Track #15
Race on Race Track #17
Race on Race Track #16
Race on Race Track #18
Race on Race Track #20
Race on Race Track #19
Race on Race Track #21