Talk to Gideon (Mattahouen)

I approach the man wearing dull silver armour and wielding a scepter.

???: "Oh so now you want to talk eh? For a Tarnished so new to the roundtable, you sure dont have any manners"

Me: "Yeah I know. Why are there so many locked doors?"

???: "Enia will keep you barred from the fingers until you hold a great rune" He points to the door up the stairs. "Nobody is allowed in my study unless I'm there, Ensha makes sure of that. And the rooms at the end of the halls are simply empty."

Me: "And the ones downstairs?"

???: "They lead to kitchens and a dining room. But since we do not eat, there's no point keeping them open now is there?"

Me: "Alright man shit, no need to talk to me like that."

???: "You are but a visitor to the roundtable. And a rude one at that. I extend my hospitality when you earn your seat here."

Me: "Right. And how do I do that?"

???: "Get yourself a great rune!" He laughs at some unsaid joke.