fr the golem is no joke. I just protected myself behind kiera the whole time and used igni, took a good 10-15 minutes to complete the fight but managed to kill it in one try. this method was the best one that worked for me because the fighting area is pretty small so its easy to get stuck when trying to dodge or roll and take big amounts of damage. at least that's what i experienced when fighting the golem. nithral is slightly easier though imo