I play a Mind Control/Time Manipulation controller in Praetoria. I'm level 19 and have just taken the Resistance mission to recruit Noble Savage.
Thing is, I have reached the point where you have your second fight with him ('Meet Once More With James Noble') and I literally cannot out-damage his regeneration. I have tried every possible approach, including popping as many damage and accuracy buffs as I can carry and while that did allow me to bring him close to half health once, he instantly healed everything I had done to him and by then, my inspirations had run out. I am convinced there there is literally zero possible way for a controller to win this fight and there isn't even a warning in place that you may need more than one player to beat the mission. Noble Savage is just a regular boss for crying out loud and I have blown through my entire stamina bar twice in the course of the fight!