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