So far finished this story on Dragonhunter, (zerk), Berserker (zerk), and Ranger (viper). To me it really feels like all you need to remember is to time your CC correct. Every class has CC's so that shouldn't be a problem. You definitely don't need to use some cheesy method to kill him. If it's any help I used:DH: Trap build with GS, you have your F1, 5 on GS and elite trap for CC. Just dont piano your keyboard and be sure to keep atleast 1 CC of cooldown for the right moment.Berserker: Haven't played it for ages so it was still using the old PS power build, with signet swapped for the banners. Fought him mainly with GS and occasionally swapped over to rifle for the CC (berseker F rifle skill, and skill 4 and 5 of rifle)Ranger: The old condi trapper build. Mainly used shortbow (4 + 5_ for CC), when swapped over to axe / torch theres axe 3 you can use for CC (but its easier to do that with shortbow)