

He'll apologise again if you say you won't forgive him, he'll give you a Rusted Gold Coin and the Prostration emote - but it's not yet clear if this has consequences. Use a Homeward Bone (or die) and you'll find Patches in the upper reaches of Firelink Shrine, on the same side as Leonhard and the side exit. Travel away and back again, and enter the tower again Patches will lock you in. Purchase the Tower key if you have not done so already, and explore it thoroughly. If you can't find Patches at the Cathedral of the Deep but need Siegward's armour, return to Firelink Shrine. Patches may not appear at the above location if you approach from a different direction. He will ask you to cross the bridge and withdraw it when you do you'll take damage from the fall and likely be attacked by the enemies below. His appearance here seems to depend on Siegward of Catarina and Greirat of the Undead Settlement's sidequests, but the exact mechanics are not known.

Your first chance to encounter Unbreakable Patches is near Rosaria's Bedchamber in Cathedral of the Deep. He's also got some great, unique gear in his inventory, though, and is vital to Siegward of Catarina's quest. The best-loved Souls NPC returns, and as usual, Unbreakable Patches is here to screw you over.
