Enter the hallway and walk the way around to Elden Ring Runes find an exit that leads to an exterior platform. You must crouch down and carefully walk around towards the platform to the left of the door to avoid being arousing the guards on patrol. Take the stairs to opposite sides of the platform and stealth kill him. Then, kill the other guards who are asleep one at a time.
Check out the piles of sandbags just next to the castle's wall. Use them to climb on the wall. Then follow the ledge until close enough to jump onto the crumbling nearby tower. Then, jump inside and fall in order to find a Stonesword Key.
Jump out the window and reach the roof below , where you'll meet an armored stormhawk. The hawk's attack is as aggressive as the ones before and is also able to shoot fire from its helmet. Picking a target to attack is challenging because of its involuntary movements and erratic movements, so the best choice is to shield yourself from one of its heavy strike as well as counter strike within the tiny opening. Defeat the hawk and claim the Dazing Cross-Legged gesture that is on the other aspect of the ceiling.
Examine the wall in which the hawk perched and you'll spot an adjacent tower with a ladder you can hop up onto. You can jump up and walk the way around the tower to cheap Elden Ring Items discover an enclosed wooden walkway which opens up to a platform that houses the Smithing Stone.