Cellar Key is a Quest Items item in Lords of the Fallen. Quest items are those that unlock special location
- Unlocks the door immediately upon entering the Cellar through the breakable wall in the Northern Monastery Wing. Inside this small room is a spider enemy and a chest containing the greathammer Law.
- Drops from one of the broadsword-wielding human enemies located at the Square of Heroes entrance to the Citadel, after defeating the Lost Brothers.