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