Just a heads up for anyone who hasn't completed this yet. Took me a while to suss it out. When you enter Volunruud head straight past the skeleton sat on the throne, do not engage it, then take the first entrance to your left and head through the wooden door. In there you will meet with Amaund Motierre and his pet guard Rexus, who will give you 2 items. If you attack the skeleton and head into this room, Rexus will attack you. I am on xbox. Hope this helps.