It's a nice piece of art, really. As for the associated story... Read it, thought it an interesting take on the premise; that it's a bit of a nod to a particular member of Batman's rogues' gallery is just icing. Fortunately for the two, well, aspects, this is perhaps at the bottom tier of possible outcomes of untested combat drugs based on an exotic MacGuffin - such a concoction derived from Grimm could well end up being analogous to Xeno-Zip (and given that there are a couple of creative at-bats asking 'what happens if we inflict xenomorphs on RWBY?' I wouldn't laugh too hard at the idea of the genuine article showing up therein).