Moder was so painful. Queen and Yagluth were so much easier in comparison.
Working our way through the Ashlands now and well, what a frustrating area as well. Had to campfire like crazy a kilometer out just to be able to breathe for two seconds without being swarmed. We ended up going kamikaze to siege a fortress for a base and suddenly I can actually play for more than 5 seconds without being attacked.
A lot of Valheim bosses are only difficult because of the massive amounts of health. Without the crazy high amounts of health, none of them seem to have difficult mechanics.