The roof is overflowing with soldiers, so be mindful on how you approach. I'd suggest that you begin by killing a sleeping soldier to the right, and Elden Ring Runes then going behind the tower to shield yourself from the three crossbow soliders on the left. They will come at you to be eliminated one by one. Once they're all dead get to the top of the tower to pick up from the Claw Talisman.
The ladder should be taken down and repeat your steps to return to the roof with the crumbling pillar on it. There is a gap between the rooftop and the one in which you faced the stormhawk. You can heal to full HP and then drop down to the courtyard below where you'll find a Stonesword Key door and a Somber Smithing Stone . Make use of your Stonesword Key you recently got to unlock the door, but be careful of the two axe soldiers waiting inside. Let them go into the courtyard, one by one when you're in need of a little distance to avoid. Slam attacks from them are slow, which means you can easily dodge them and use a back stab. Within the room, you'll discover the Hawk Crest Wooden Shield, Misericorde, along with the Iron Whetblade.
You can go back to the courtyard. Go through the opposite door that it's not explored yet. Inside is a dining hall that is guarded by the Grafted Scion, but we aren't looking to fight with it, so hurry to the other side of this room, and then enter the tiny room on the opposite side that houses two dogs as well as Crimson Hood. Crimson Hood atop a pile of bodies.
Escape from the room and head to immediately to buy Elden Ring Runes your left . You will discover the elevator that will take you back onto the Spot of Grace.