Full list of all 24 Family Mysteries: Poisonous Promises achievements. It takes around 4-5 hours to unlock all of the achievements on Windows.
Find all Collectibles.
Find all Morphing Items.
Complete a Hidden Object Puzzle without a mistake.
Finish all the Minigames without skipping any.
Capture the main criminal.
Perform all the Evidence analyses.
Collect all Evidence.
Rescue Duke.
Capture the henchmen.
Drive a speedboat.
Finish all the Deduction Scenes.
Find three Hidden Objects within three seconds.
Finish three Hidden Object Puzzles in less than ten minutes.
Complete a Minigame in less than a minute.
Play through the first hour of the game without skipping any cutscenes.
Perform three Evidence analyses.
Finish your first Deduction Scene.
Complete a Hidden Object Puzzle in less than a minute.
Finish three Hidden Object Puzzles without a Hint.
Complete 5 Minigames without skipping any.
Perform your first Evidence analysis.
Complete a Hidden Object Puzzle without a Hint.
Find one Collectible.
Find one Morphing Item.