Here is the full list of all 16 SKYHILL: Black Mist achievements.
Find the exit from the maze.
So it begins...
Received a phone call...
Kill huge monster
Craft at least 1 instance of each item
Open at least 100 containers
Die from the corruption monster
Kill 6 fat monsters.
Exit the second endless loop.
Exit the third endless loop.
Exit the fourth endless loop.
Jump
Find the experimental gun.
Find at least one nest.
See what happens after the timer is over.
Die from a fireman's axe.