It is the rusted ring and you can t get it until you leave the asylum and come back later.
Undead asylum locked door.
Keep this in mind for your return to the northern undead asylum.
Behind the undead soldier sword is a locked door.
Read the messages on the floor to learn more about special.
When you are ready enter the fog gate.
Other answers i don t remember if the demon drops the key or you get it from the guy that gives you the estus flask one of them should give you the key to open that door if you didn t got it then.
Once outside you ll emerge onto a balcony.
Used to unlock the floor 2 west door in the asylum when you.
Undead asylum f2 west key found on the firelink shrine rooftops accessible from the firelink shrine lift shortcut to the undead parish.
Once you have finished off your first real enemy be sure to heal up using your estus flasks if you ve taken any damage.