Here is the full list of all 16 Dracula's Legacy achievements. It takes around 2-3 hours to unlock all of the achievements on Windows.
You didn't skip any single puzzle.
You passed HO scene less than 30 seconds.
You didn't miss any single video or dialogue
You collected all the items in the НО scenes.
You completed the game in the Expert mode.
You found 3 items for 3 seconds.
You've got the gift of Dracula.
You found a secret passage in the fountain.
You managed to get rid of both twins.
You managed to sneak into the house of one of the twins.
You managed to kill the Daylight Guard.
You found the lair of the Daylight Guard.
You found the diary of the priest.
You got into the shop and found Matt's photo.
You destroyed the wall and get into the city.
You've found the lair of the vampires.