Here is the full list of all 15 I Saw Black Clouds achievements.
The ghost helps you in the cellar
Die more than once
Discover all of the endings
There was so much more for you to find out
Discover a drunk voicemail from Charlotte
Kristina is in denial, Emily still haunts her
Discover that Jack is dead
Kristina's head is clear
Search the bedroom without permission
Discover the origin of AGNES
Stumble upon a supernatural story
Kristina is not strong enough to face it
Escape from the fire
Round two, choose to fight the second guy
Delve deep into a dark version of the story