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