[@Nieszka] Also I should add that Naveroth Direwolves are [i]especially[/i] hard to kill, the fact that Rhiannon was able to defeat two and live is an amazing feat. 

As my RP partner [@Skrubsetsu] added Direwolves to the lore (her character is a witch from Naveroth) she can tell you they are comparable to the Sandworms of Roh and The Dragons of Alvion.