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