I was considering a...non-traditional tank. Instead of simply being hard to kill, he focuses instead on lifesteal- that is to say, all of his tankiness comes from his ability to land hits on enemies. If he can wail on you, he's a tough son of a bitch to down. But if you can kite him? It's a fairly easy fight. His attacks wouldn't hurt as much as a melee DPS, obviously. They're pretty run of the mill. The main point of striking a foe is simply to stay alive.