I expect a lot of it will be the same as DW, but basically doing most of the things that DW on the 360 should have done -- e.g. improve visuals, improve physics, more numbers to fight. And like DW, the only real sources of difficulty will lie in the form of the "boss" characters (well, that and the little missions that had short time limits on them). Though from some of the earlier videos, it seems as if, unlike DW, some of that difficulty will be from the fact that the "boss" characters actually have some AI to them rather than simply being able to take and deliver more damage.
In any case, it at least seems to have some semblance of a story in a sort of single-character RPG style, but I haven't seen enough to be sure what it may consist of.
