I don't know if this is a bug or not, but I don't recall encountering any other normal mobs in the game that can do this. This issue was reported back when Thieves Guild was still on PTS, but it was never fixed
or was possibly acknowledged as working as intended, which I missed if so. I am level CP160. I start off in stealth and behind the archer. I use Reaper's Mark IV to mark the archer, then I use Ambush IV to open combat.
Every archer dodges my Ambush
100% OF THE TIME. Subsequent Ambushes work, but the initial Ambush always gets dodged and results in 0 damage. It doesn't matter if I attack from the front or the back. No other enemy in the delve does this.
Edited by Ignotus on July 23, 2016 8:03AM