I found the opening of that trailer a little silly, and then it just kind of got stuck at silly for the rest of it. Really, though, I don't really have a problem with the existence of the game as it isn't a main instalment and really just a spin-off that some may enjoy. Personally I have no interest in a Vita so that kind of craps on any chance of playing it, but I'm not going to lose sleep.
Whoa! Diablo's in this too? How Fitting!