Here is the full list of all 20 New York Mysteries: Secrets of the Mafia achievements.
Collected all the phantom objects.
Completed all collections.
Completed the tie collection.
Completed the statue of liberty collection.
Found 3 items in 3 seconds in a hidden object scene.
Completed the briefcase collection.
Completed the main and bonus chapters without skipping mini-games.
Completed the main and bonus chapters without using hints in hidden object scenes.
Completed the main and bonus chapters without skipping dialogs or movies.
Completed the spot the difference mini-game without making a mistake.
Completed a hidden object scene without random clicks.
Completed the main chapter on Hard mode.
Completed the casino chip collection.
Arranged the books showing the presidents' portraits in chronological order.
Completed the symbol plates mini-game without excess clicks.
Completed a mini-game in more than 5 minutes.
Clicked more than three times in one second in a hidden object scene.
Completed a trip in the underground city.
Completed 3 mini-games in a row without using the Skip button.
Completed a mini-game in less than a minute.