No missable achievements (plus 34 unknown)
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Find a White Feather.
Find a Widow's Sorrow.
Find a Morphing Object.
Finish any Minigame in less than 1 minute.
Perform your first Evidence Deduction.
Finish 4 Minigames in a row without skipping.
Perform 3 Evidence Deductions without a wrong move.
Perform all the Evidence Deductions.
Complete the game.
Find 3 hidden-objects within 3 seconds.
Collect all Evidence.
Find half of all Widow's Sorrows.
Play throught the first hour of the game without skipping any cutscenes.
Finish any Hidden Object Puzzle in less than 1 minute.
Complete the bonus adventure.
Find half of all White Feathers.
Finish a Hidden Object Puzzle with less than 4 mistaps.
Finish all Minigames without Skipping.
Finish all Hidden Object Puzzles without using hints.
Finish 6 Hidden Object Puzzles in a row without using hints.
Find half of all Morphing Objects.
Find all Widow's Sorrows.
Find all White Feathers.
Find all Morphing Objects.