I dunno, they can keep it cheap. I imagine Night Trap augers looking like zombies under those ninja outfits. That they need those outfits to keep their flesh from deteriorating and falling off. And those devices they use to siphon blood is because while they're vamperic in nature they are unable to bite their victims. Augers still have physical powers though over stealth and limited agility but looks near-human in comparison to what true vampires can do.
The other alternative is CGI which was more expensive, lol.
But with that kind of idea, it'll be wasted on FMV games.
It needed to be an action game like Ooze or Ghostbuster.