This trailer is fantastic. Not only does it feature a dual-wielding protagonist, it also features the gloriously awesome Darth Vader. What a fantastic antagonist he is.

The trailer's pretty vague, opening with Vader betraying protagonist Starkiller and ordering him to be killed. Obviously, not content with having his head-popped by one of the Stormtrooper's laser-guns, the shaven-headed warrior vanishes into the darkness, only to draw two lightsabres and proceed cutting everyone to shreds. Awesome.