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.
Complete your first forensic analysis.
Complete a Hidden Object Puzzle without a Hint.
Complete a Minigame in less than a minute.
Find one collectible.
Finish any Hidden Object Puzzle with less than 4 mistakes.
Complete your ballistic forensic analysis.
Finish all the Minigames without skipping them.
Finish 3 Hidden Object Puzzles without a hint.
Finish 3 Hidden Object Puzzles in less than 10 minutes.
Find 3 Hidden Objects within 3 seconds.
Complete a Hidden Object Puzzle in less than a minute.
Find Anna Frick.
Find all collectibles.
Find 30 collectibles.
Discover the identity of "The Guilty Man".
Defeat the Killer.
Get rid of one guard.
Disable three security cameras.
Locate the Killer's hideout.
Put out the flames.
Defeat one Soul Collector.
Compare two blood samples.