I click on the quest and the arrow says go defeat Gurtok Barrier Demon when i go into the dungeon to fight him it wont let me fight him it just has a quest mark near him and it says get some blood from another dungeon and in that dungeon it wont let me get the blood after i defeat the guy there. I am lost and dont know what to do it is one of the last quests in Grizzleheim i have left.