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Murder Them With Death
I already killed off the dark brotherhood and so far every follower I have is either too weak or sucks at sneak.
Technically any follower can be great for a thief if you give them muffle to silence all that clunky armor. You want to avoid followers that like to talk when you stand too close to them, though, so Serana and Karliah (even though you can't keep Karliah as a permanent follower anyway) would be bad choices, as your proximity may trigger dialogue.
Personally, I've been very happy with Vorstag. He's heavy armor, swoard-and-board, and while he does have things to say about Dwemer ruins and not liking mines, when you're in "sneak", he's silent. He clears his throat and yawns less often than Lydia, too, which are things that can alert enemies to your location as well.
I would recommend picking up a follower skilled in heavy armor so they can tank all the hits for you and keep the enemy distracted so you can sneak in and pick them off; just give them boots with Muffle.
But, I also want someone strong enough even with little armor.
Do you have Hearthfire? If so, Valdimar (Housecarl when you become thane of Hjaalmarch) is pretty strong, and doesn't mind using light armour, and he often uses alteration spells to strengthen his defences anyway.
Follower speech (and follower dog barking) will not cause detection. If they did Cicero's endless ravings and Barbas's incessant barking would have gotten my characters detected long ago. What will get you detected though is a follower who breaks sneak mode during combat which is pretty much every follower and why none of them are particularly suited for stealth combat....You want to avoid followers that like to talk when you stand too close to them, though, so Serana and Karliah (even though you can't keep Karliah as a permanent follower anyway) would be bad choices, as your proximity may trigger dialogue...
That's good to know. I wondered why we didn't get noticed more with Serana babbling away in the background.Follower speech (and follower dog barking) will not cause detection. If they did Cicero's endless ravings and Barbas's incessant barking would have gotten my characters detected long ago. What will get you detected though is a follower who breaks sneak mode during combat which is pretty much every follower and why none of them are particularly suited for stealth combat.
The best you can do is choose a follower who favors using archery and when I say favors I mean they are coded that way and not that they have high archery skill (which is why housecarls don't fit into this category as they are still as prone to engaging in melee with an archery skill of 98). The followers who have AI coded to favor archery are Aela, Annekke, Derkeethus and Faendal. Aela is the best choice because her level cap is 50 and she also has high Sneak skill (which still matters even with boots enchanted with Muffle because there's a visual element in calculating detection by NPCs that Sneak skill affects).
And Faendal will attack you for crimes hehe..
I already killed off the dark brotherhood and so far every follower I have is either too weak or sucks at sneak.
I was going to ask earlier, but, isn't thievery kind of a solitary pursuit? (kind of like assassination). A team of thieves maybe, but why would you want a follower, even if they are a tank. Sneak, sneak, sneak, grab, sneak, sneak, sneak, escape. That's what I do.
I don’t use followers and I destroyed the Dark Brotherhood, but I do use a lot of sneaking and because I am having fun playing like that, I don’t need followers because they give up my position and interrupt what I am doing all the time. I play alone and it is in my case, my best choice. Just my 2 cents ...