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