Crusader Hell 2: Helliquary lvl 10 Boss, Challenge Rift 48 - Diablo Immortal Closed Alpha

This was a painful experience in end-game. Hell 2 outdoors was harsh. Then I upgraded the Helliquary to level 10, and got the quest to kill Lassar. This is definitely the toughest boss I have ever found in Diablo Immortal -- and that means there might be even harder bosses in the end-game. I was literally running like a headless chicken, not able to read his mechanics. Sometimes he pulls the ground and creates a round boulder that stays in the ground. You have to hide behind the boulder, or you are one-shot via AOE. The problem is sometimes when you hide behind the boulder he launches a fireball that one-shots you too. The fight lasted around 10 minutes, but finally killed him with the help of another Crusader (Hipporit), and I got a new upgrade for the Helliquary that sent me near Offensive Rating 1750 (which is the requirement to survive Hell 2 (outdoors). After the upgrade, I was able to kill Hell 2 outdoor mobs easy. I reached Shadows: Path of Blood Challenge 55 with that upgrade, and then I couldn’t p