We had attempted to do this fight on HC when Trial of Valor was released. But we soon found out (as we also had heard) that the fights were overtuned for even people in EN HC gear. So we spend a good few attempts getting spanked by Hyrja and Hymdall and had to give up on it for a while and did some of it on normal.
After a long time (of farming EN HC and ToV N for gear) and many attempts (just to see phase 2 a few times) the long needed nerf to the fight came. After this we went in to take on the trial again and this time we came out victorous. Though this was a short lived celebration as we knew this was only the beginning of the pain.
So we set our sight downwards toward Helya's realm and her minions.