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