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