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