Every first-person shooter needs an enemy that can disappear and reappear at will, and the Assassin here fits the bill quite nicely. He has sort of a Karl Ruprecht Kroenen from Hellboy vibe going on, which is good, as Kroenen is definitely the sort of Nazi you don't want to run into in a dark alley. Of course I'm not sure there is any sort of Nazi you'd want to run into in a dark alley. Do they make Cupcake Nazis? If not, I think they should.