Gunpowder (Large)

Located on the northeast window ledge on the third floor.

Located on the crate on the balcony. Shoot the nearby ladder to reach it.

Located in the large container in the northwest corner.

Located in the trunk of the car.

Found on a shelf along the northern wall.

Found on the shelf at the southern end of this corridor.

Located on the desk.

Located on top of the metal drum opposite the southern exit to the save room (first floor).

Located on the bench in the northern part before heading east.

Found in the northwest corner of this room.

On the desk on Insanity difficulty.

Found here on Insanity difficulty.