No missable achievements (plus 42 unknown)
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Get out of your own room.
Pick up an item.
Meet the red butterfly.
Complete the blinking eyes puzzle.
Complete the fan puzzle.
Get the sledgehammer.
Finish the conversation with the bag in episode 1.
Find your way through the maze.
Complete the drawings puzzle.
Complete the clock puzzle.
Complete the first episode.
Unlock the first door in episode 2.
Complete the buttons puzzle.
Complete the second code lock puzzle in episode 2.
Unlock the metal box in episode 2.
Find all the nails.
Get the table near all the photos to break.
Talk to Jack.
Complete the puzzle with the plates in episode 2.
Complete the second episode.
Unlock the box with the circles in episode 3.
Collect all of the balls in episode 3.
Complete the puzzle with the coloured balls.
Watch the scariest movie ever!
Find Tory in episode 3.
Complete the puzzle with the symbols in episode 3.
Complete the third episode.
Get the knife in episode 3.
Get the good ending in episode 3.
Get the bad ending in episode 3.
Collect all coins in the second episode.
Find all the hidden text in episode 2.
Collect all coins in the first episode.
Collect all coins in the third episode.