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.
Win both Kony's and Oliver's wish.
Win all of Ava's wishes in one timeline.
Finish the game.
Be mentioned in the credits.
Make Xiang rich.
Change Shakespeare's ending.
Correctly answer all the questions of a trivia game.
Mariano's relationship problems.
Be trolled by the roulette going back.
Win Hector's wish.
Make Nikola and Lariat go on a date.
Win a game of trivia.
A character died.
Lose a game of trivia.