Best standard shield in the game plus a high destructive fast weapon and dark magic for when brute strength is not enough.
The armor is just for aesthetic purposes. The main idea is to do so much damage so fast that it doesn't matter how frail you are.
This is not a PvP build by any means, but it can solo anything in the standard game barring the Four Kings.
This build may be slightly tweaked to include more Dexterity for faster spell castings but it does fine on its own as is.