Here is the full list of all 22 Ghost Files: The Face of Guilt achievements. It takes around 4-5 hours to unlock all of the achievements on Windows.
Find all collectibles.
Defeat the Killer.
Finish all the Minigames without skipping them.
Find 30 collectibles.
Discover the identity of "The Guilty Man".
Complete your ballistic forensic analysis.
Defeat one Soul Collector.
Locate the Killer's hideout.
Get rid of one guard.
Disable three security cameras.
Complete a Hidden Object Puzzle in less than a minute.
Finish any Hidden Object Puzzle with less than 4 mistakes.
Find Anna Frick.
Put out the flames.
Complete a Minigame in less than a minute.
Finish 3 Hidden Object Puzzles in less than 10 minutes.
Finish 3 Hidden Object Puzzles without a hint.
Find 3 Hidden Objects within 3 seconds.
Compare two blood samples.
Complete your first forensic analysis.
Complete a Hidden Object Puzzle without a Hint.
Find one collectible.