I'm looking at doing another play through and want everything unlocked from the beginning, specifically all the items you get for completing the different DLC expansions. I know you get some stuff for just beating them on normal mode, but there are aditional rewards you can earn for completing them on nightmare mode, like an extra axe from The Golems of Amgarrak.

I want to quickly rush through The Golems of Amgarrak and Witch Hunt on Nightmare to unlock everything for the main campaign. Are there any OP builds that will make this easy mode, and what order do you recommend doing them in? Is it worth doing one then Importing that character into the second DLC or would a specifically tailored MC be best for each.

If it's really necessary I can do a quick run through of awakening, though I would rather not, to get a couple of levels and gear. Is there any advice that you can give to make doing The Golems of Amgarrak and Whitch Hunt on nightmare to make it as easy as possible?