Does anyone know what these runes/symbols are? I've seen more of them but I only screenshotted these ones.
Yeah I've seen them too, what gives?
That's proprietary Thieves Guild knowledge. Union regulations, hope you understand.
So I just got down the Calcermo portion of the TG quest. I have to retract a few earlier statements about the questline.
Holy shit. Pure stealth action all the the way through, and it's looooonnngggg. (In terms of a stealth mission, anyways.) Guards everywhere, narrow choke points, being almost seen more than once and having to run to corners to wait and hide. It made the Goldenglobe Estate Mission seem simple by comparison. I'm not sure how you could get through this without having to kill some people without a) Throw Voice Thuun b) The Muffled Perk or c) a huge stock of invisibilty potions. Once I remembered I had throw voice the whole thing got a lot easier, but it would have been a real bitch if I wasn't a fairly high level and been thoroughly prepared. It was the kind of mission where you tell your follower to wait outside because there's no way you can do it with them following you.
Good times, it's probably the most extensive stealth mission I've played in a TES game. Not a lot to it, in the end, but compared to what the game has asked of a thief so far, this was by far the most challenging and requires actual effort to not get seen. About the only thing that spoils it is the somewhat unbelievable stealth handling of the game, where a guy 30 feet away from you in a lit room can't see you. Not great by Thief standards, but pretty decent by TES ones.