Let me tell you a story about the time I got Titan HM in the Trial Roulette.

I was playing Paladin, and had a SCH healer we were the only 2 that could dodge stuff. Everyone else was dead at about 45% or so left to go because they were bad at dodging. But me and the healer decided to keep going, neither of us made any mistakes. I had to bust him out of the rock so many times, fought Titan for 35 min before he died. The sch used the LB3 at 5% raised like 3 guys that didn't fall out, even then during that 5% 2 of them managed to get killed again.

That is why we have enrage timers because a few people can carry everyone else that is unskilled at the fight and take as long as you want to win.