This is part of the Companions questline where you fight the Silver Hand (no spoilers). I'm dual wielding skyforge steel swords (obtainable from the Companions blacksmith) with the Elemental Fury shout (puts a buff on both weapons that drastically increases attack speed, not usable on enchanted weapons). Most of my perks are in the one handed tree, with one point in the sword perk for added critical strike chance. That's why you see so many brutal finishers.
Specs: GeForce 560 ti 8 gigs DDR3 RAM Phenom II x4 @ 3.1 ghz
P.S. Argonians rock!!
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