That's a great tank build. When I play dungeons I go tank and use Sword/Chaos. If you remember Tenchi, he plays as well and goes claw/blood magic as a healing build. Here's a tip for Nightmare mode dungeons. If you want to go DPS, don't use melee weapons. You don't want to be ANYWHERE near the bosses. I recommend Shotgun or Assault rifle. Shotgun has the cleanse ability which your group will absolutely NEED in a few dungeons. And the Assault rifle will allow you to act as a secondary healer while dishing out DPS. When I DPS I go pistol/Elemental magic because Elemental magic has a couple abilities that negate some of the buffs that the bosses get in Nightmare mode.
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