Merry Murder Elves

Publisher's blurb: It’s Christmas Eve, but something is terribly wrong. The elves have gone mad with bloodlust, the reindeer are rabid, the gingerbread houses have been burnt to a crisp with the families inside, but Santa still must deliver presents by Christmas morning. Can you help Santa and his Wife navigate through his house, workshop, and stables—and kill off the murderous elves and reindeer—in order to reach the sleigh and deliver the presents before Christmas morning?