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