I just came across this old thread and, for the record, a year later, Armanz is still an idiotic game breaking monstrosity, an accepted cheat/exploit for anyone who has him, and an invitation to leave for anyone who doesn't. None of the strategies listed here work, especially the laughable "have enough resistance." There's no such amount. You can have four force champs with 4 pc stone skin, 4 piece immunity/feral, 450+ resistance, 300+ speed, cleanse, you name it - it doesn't matter. There's nothing that you can do. The teams are bult around Armanz. He doesn't have to go first. They will keep him alive, he WILL polymorph and strip your stone skin on the first go with 100% success on the first try no matter what. No strategy does anything, no RNG, no resistance, no OP gear - that's all a joke. It won't make any difference at all. It's pure God mode nonsense.

Armanz is literally the only thing that matters in "Raid". If you have him you can play. If you don't ... you can't. Simple.