I know DH was published by Beth, but I'm not entirely sure they developed it, however I do feel a lot of features and controls reminiscent to TES and Fallout.
First of all, the combat. In TES it was just two guys hackin wildly until one fell over and died, with the occasional spam or holding down a trigger for a spell. In DH the fighting was much more cinematic with more realistic reactions and controls. Visually, DH has a much better combat system.
Second, jumping. In TES it was the press of a button to leap and hop from surface to surface. In DH it was a lot better designed and more appealing, even though its a simple command to climb.
My iPod is going dead, so I got to stop for now