Murdered: Soul Suspect

This trophy is titled "The Stalwart Specter" and it requires you to find eight Old Rifles placed throughout the Salem Police Department.

Old Rifle 1 - Once leaving the Bell Killer War Room, head straight ahead and enter the lobby beyond the two officers by the snack machines. Make an immediate left into the room with the lockers and lone officer. At the end of this room, the first old rifle will be leaning against the wall (Old Rifle 1).

Old Rifle 2 - Make a left into the hallway and walk forward through the wall into a bathroom. Enter the first stall to your right to find the second old rifle on the floor (Old Rifle 5).

Old Rifle 3 - Enter the bullpen area and head straight back to another hallway.
Enter the hallway to the left and at the end will be the fourth old rifle against the wall at the end (Old Rifle 6). Please note, talking to the girl will progress the story. Get the next rifle first and then return to her.

Old Rifle 4 - Return to the main hallway and walk through the bars ahead of you and enter the first cell. Walk through the walls to the left for a couple of cells to bypass to portal. Exit the cell and pass through the door on the right. Leaning against the wall between a water cooler and some cabinets is the third old rifle (Old Rifle 7).

Old Rifle 5 - Progress the story until you're on the 2nd floor. Walk by the two police officers and hang two rights. The fifth rifle will be sitting against the wall behind the blackboard (Old Rifle 3).

Old Rifle 6 - Look at the soda machine near the blackboard and walk through the wall it's against into what appears to be a break area with a bunch of tables and chairs. The sixth rifle will be propped against the pillar at the top of the stairs to your immediate left (Old Rifle 2).

Old Rifle 7 - Once you get the girl passed the cops and into the detectives area, Ronan will be facing forward outside of Rex's office. Head straight and make a left down the hallway to find the seventh rifle leaning against the wall at the end (Old Rifle 8).

Old Rifle 8 - Enter the office to the right of rifle seven and head straight ahead into the back room. The final rifle will be laying on the floor (Old Rifle 4). Once you pick up this rifle, the trophy will unlock.