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