Here is the full list of all 22 Righty Tighty XL achievements. It takes around 1-2 hours to unlock all of the achievements on Windows.
Unlock Purple
Unlock all skins in the game
Unlock Orange
Unlock Green
Unlock Blue
Unlock Ding Dong
Unlock Diamo
Unlock Orbt
Unlock Bit Blaster
Earn 750 points across all rounds
Unlock Mick and Rorty
Earn 50 Points in a single round
Earn 45 Points in a single round
Earn 40 Points in a single round
Earn 35 Points in a single round
Earn 30 Points in a single round
Earn 25 Points in a single round
Have a total of 50 near misses
Earn 20 Points in a single round
Earn 15 Points in a single round
Earn 10 Points in a single round
Earn 5 Points in a single round