What if we tried to create a movie script together!

How did the elf know that the two newcomers were vampires? Were they showing their fangs, had gray skin, or something else? Please, don't use vampire swords from the game as an invariable attribute of vampires. Otherwise, we'll end up retelling the game again. And what about the guards, those camouflaged archers who are supposed to shoot down everything that moves? If an ordinary elf spotted the vampires, then it was their duty to shoot them down before they even got close.