Here is the full list of all 16 Majotori achievements. It takes around 4-5 hours to unlock all of the achievements on Windows.
Win both Kony's and Oliver's wish.
Change Shakespeare's ending.
Win all of Ava's wishes in one timeline.
Finish the game twice.
Make Xiang rich.
Turn Sebastian into a master chef.
Mariano's relationship problems.
Finish the game.
Be mentioned in the credits.
Win Hector's wish.
Be trolled by the roulette going back.
Make Nikola and Lariat go on a date.
A character died.
Lose a game of trivia.
Correctly answer all the questions of a trivia game.
Win a game of trivia.