The Church Cannon is one of the new firearms you’ll be able to acquire in Bloodborne: The Old Hunters. After grabbing the Eye Pendant, you’ll be able to access the elevator that takes you up to the Research Hall. However, you don’t want to go up there just yet. Simply step onto the elevator and quickly hop off to allow it to head off. This will bring up a lower platform that contains Laurence’s skull.
Grab the skull if you haven’t already, and then pull the lever next to the elevator to bring it back down. Once you pull the lever, quickly hop onto the platform that contained Laurence’s skull and this will take you down to an even lower level. Once there, step off the platform to find a chest waiting for you. Open the chest to get your hands on the powerful Church Cannon.
“An oversized weapon used by the Healing Church. A type of cannon that fires with a curved trajectory and creates an explosion upon impact.
Originally designed for use by brawny men with deteriorated brains, not for just any ordinary hunter.
But the men lacked the wits to effectively operate firearms, and the weapon was quietly ushered into permanent storage.”