Here is the full list of all 12 Hostil achievements.
Secret of the scene 1
Secret of the scene 2
Secret of the scene 3
Secret of the scene 4
Secret of the scene 5
Secret of the scene 6
Secret of the scene 7
Secret of the scene 8
Secret of the scene 9
Secret of the scene 10
Secret of the scene 11
Secret of the scene 12