Here is the full list of all 13 Left in the Dark: No One on Board achievements. It takes around 2-3 hours to unlock all of the achievements on Windows.
Finish the game in Expert Mode.
Unlock all achievements.
Complete all Hidden-Object Puzzles without using the Hint button.
Unmask the Hookman.
Get out of the trap.
Complete all minigames without using the Skip button.
Find the lighthouse without getting lost.
Complete a Hidden-Object Puzzle in less than one minute.
Swim to the Devil Island without getting lost.
Fix the sailboat.
Complete a minigame in less than one minute.
Complete a Hidden-Object Puzzle with no more than three mis-taps.
You found four objects in four seconds in a Hidden-Object Puzzle.