Here is the full list of all 13 Scarlett Mysteries: Cursed Child achievements. It takes around 2-3 hours to unlock all of the achievements on Windows.
Finish any Minigame in less than 1 minute.
Find one Father Trace.
Find half of the Father Traces.
Find all of the Father Traces.
Play through the first hour of the game without skipping any cutscenes.
Finish the game.
Discover all the visions.
Finish any Hidden Object Puzzle with less than 4 mistakes.
Finish any Hidden Object Puzzle in less than 1 minute.
Find 3 Hidden Objects within 3 seconds.
Finish all the Hidden Object Puzzles without using any hints.
Finish 4 Minigames in a row without skipping.
Finish all the Minigames without skipping.