Casualties of War Trophy in The Dark Pictures Anthology: House of Ashes

There are six black framed pictures hidden throughout the game, which are meant to give you a clue about a future choice in the game. Below are the locations of each picture, along with the chapter they appear in:

Arisen: Cursed - In the burial chamber, shortly after regaining control of your character, head to the right to find the picture.
Squeeze: Underworld - When Nick and Jason meet up underground, head up the stairs to the left of the door you can interact with to find this picture.
Fallen: Pazuzu - Soon after gaining control of Eric, you'll descend down a drop using climbing equipment. You'll find yourself heading down a long corridor, and at a fork in the road, Rachel will go left. Go right instead, and at the end of another tunnel, you'll find the picture.
Tripwire: Bloodbath - Nick and Jason will enter a circular room with a hole in the center, head around the right side, and you'll find the picture just past the corpse on the ground.
Thirst: The Signal - When you gain control as Nick in this chapter, the premonition will be right next to you.
Mauled: Brothers - After exiting the elevator with Jason and Salim, take a hard left towards the glowing green tree, and you'll find the picture at its base.