Most of what I got regarding the fext is from a few random, ill-maintained [url=http://warriorsofmyth.wikia.com/wiki/Fext]websites[/url]. They don't really need to feed like vampires, they can exist off of normal food (or no food). The vampire thing was more referring to super-strength, fast regeneration, etc. All the existing fext were former german soldiers, strong aryan lads who volunteered for this enhancement project, but once their ultra-violence was unable to be kept in check the SS decided to shut down the project... violently. The remaining ones, hiding out in Leningrad, are trying to survive; the russians are trying to kill the monsters occupying one of their most important cities, and the germans are trying to ensure that the soviets don't work out the secret to creating these things.

The plot will follow those two mortals, primarily working together but also working with their own forces. But I feel like I need to add in more than just a search and destroy mission, and I can't quite place my finger on what else to add while keeping their mind on the objective. I'm just bad at creating a storyline. The way I see the main plotline go is something like this: Search, investigate, hunt, firefight, evade, search, hunt, destroy; with the constant looming question of, are the main characters predators or prey. 

I don't know, I'm really not sure how to play it out.