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