Viper-5

On a shelf in the building filled with hostile soldiers.

On top of a stack of pallets near a carriage holding a few shipping containers inside the train depot. Another one can be found nearby, on the ground next to a doorway.

Inside the attic of the broken house. To reach it, climb the crates on the house’s western side.

Next to a corpse slumped against the wall.

Found in a small room’s lockers soon after exiting the corridor filled with corpses. Can only be accessed during a late-game story mission.

On a barrel in the house’s Rodent-infested basement. To reach it, break into the boarded up room and climb down the ladder.

Found on a shelving rack upstairs, in the southern corner.

You can find this in the trunk of the car.

Found underneath the cab of an abandoned truck.

Located next to the corpse on top of the roof. You’ll need to make your way through the Electro anomalies to the ladder leading up to the roof.