I fought Suttunger in Jotunheim but was too lower level to defeat him despite about 100 goes. I was stuck as you can't get out. Eventually I found that at one point you can get over the icicle 'fence' and out of the fighting ring. You can then move in a small area outside of the ring, this opens up the 'wake up' option on the world map and you can go back to the main game. However, now that I am at a much high level, if I go back to Jotunheim, using the potion, I cannot move or do anything once I get to Jotunheim. I am in the cave but none of the controls work. The only thing you can do is go to the world map and use the wake up function. I have tried it about a dozen times now after various updates but I can never move in Jotunheim or get back to the Suttungr fight.