The Lone Werewolf II

What would you do if you were given the skin-walker gift, the ability to change into any animal you can think of? Would you use it for great good or great evil?

A friend's sister and a complete village is being terrorized by a castle full of vampires, zombies, hell hounds and a thing too feared to name. What can one Lone Werewolf possibly do to end this reign of terror?