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