Nightwalkers

Vampire Ghouls are the first and basic Demons you'll battle. They are quick and agile but weak and vulnerable too. One on one they are as easy as ABC, but when in a whole horde (ussually in missions at Sister Ingrids Mine), they are thougher than breaking a boulder in peices with bare hands, which is why you should avoid being surrounded. Put the evade button in good use if you are. If in hordes and since their vulnerable, they will be easier to kill with only a Double Barrel Shotgun