The great helmet of the retainer
environment attribute
Acquisition method
The equipment is located in the old cathedral in downtown Winchester.
Go down to the platform in the picture from the bird's eye view, break the box and enter the room to get the first key.
Find the second key on the beam above the church hall.
Climb over the fence and get the third key to the cabin behind the church.
Go to the back door of the church, break the window on the second floor, and go into the room to get the equipment.