I'm level 41 now and I sorta forgot about Grisleheim (excuse spelling) and i couldnt get into Ravenclaw when i went back. What mission do you do or somthing and who do you talk to?
You have to get the quest from a guy in Northguard to defeat Joton. Then you can go into Ravenclaw and when you complete the Blood Brother you can go into Wintertusk. (The bosses in Wintertusk are powerful they have like 9000 health each.)