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