I have all the other ones, but this last one on the fourth Inferno level is giving me quite a headache. It took me 10 games to finally pass that deadly saw gauntlet, and the frikkin thing disappears right as I near it!

Since the quest's name is "best player" I guess there is a pre-condition you must satisfy before the pad doesn't disappear. But which is it? I have all the keys, I passed all the dimensions, I have beat Tuber in regular, nightmare and mirror, I have unlocked Coop mode, Time Attack and Ninjutsu, what else is there?? And please don't tell me you have to pass Inferno first, because that is insane, especially now when I solved so many quests the damn fireball interval has shortened so much...
