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 Hidden Object Puzzle with less than 4 mistakes.
Find half of the Father Traces.
Finish any Hidden Object Puzzle in less than 1 minute.
Find 3 Hidden Objects within 3 seconds.
Finish 4 Minigames in a row without skipping.
Finish any Minigame in less than 1 minute.
Find one Father Trace.
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 all the Hidden Object Puzzles without using any hints.
Finish all the Minigames without skipping.