I have no complaints whatsoever when it comes to DeathSpank's visuals, and that's mainly because of its unique fairytale pop-up book aesthetic. Several parts of the environment have been rendered in two dimensions, and the entire world seems to have been constructed on top of a layered rolling log. It may disorient and confuse at first, but it won't take long for anyone to see that this visual style is perfect for the game. Characters look great; DeathSpank's constantly-evolving armor set is always visually represented in the field. Diablo II got away with not doing this, but I'm not sure DeathSpank could. Most of the armor pieces are so ridiculous that they are worth trying on even if the stats aren't so impressive.
It's difficult to tell whether DeathSpank sounds better than it looks. This game sounds wonderful; every audio design choice is sound, if not brilliant. DeathSpank's soundtrack favors surf rock over stock heroic fare; once you hear it, you'll accept its coupling with the strange visual design with no hesitation. Additionally, the voice acting is superb across the board. DeathSpank's lines are delivered with an overdose of narcissistic zeal; at times, Michael Dobson sounds like he's channeling Phil Hartman, but he makes the role all his own. The dialogue is ridiculous almost all the time; the fact that you get to choose from a number of increasingly bizarre lines only makes it better.