This mix of vampire comedy and daily life trudge can feel imbalanced sometimes. It's a pretty straightforward story with the usual good guy in work environment, his less productive buddies and the disgruntled love of his life. Then it adds literally gallons of corny bloody spectacle. While it may not open with much glee, the unworldly struggle towards the end proves to be ludicrously amusing.
Fran Kranz, the same guy from The Cabin in the Woods, plays as Evan, a hard working employee of a company that doesn't appreciate him enough. Instead of being promoted, he finds himself in the verge of losing his job and also probably his life as supernatural forces begin to influence the company. The movie makes fun of its characters in highly self-deprecating manner, definitely not your usual troupe to fight the undead.
There's an underlying analogy of dutifully working for scraps, which isn't polished enough at first. The fun starts as these mostly incompetent characters have to face not only their dreadful job, but the titular bloodsucking foes. It produces a hectic cynical parody that gets better as more blood is spilled.
Script is well written enough to be identifiable and the delivery from actors is often openly mocking both real as well as nocturnal life. There are lots of visual cues involved, which may be over-the-top yet strangely effectively humorous. Its pace and editing slightly resembles Shaun of the Dead, both have dead-pan sarcastic delivery of dreadful situation.
At the beginning the movie feels incessantly rude and a tad outdated, although there's enough comical content in latter half to raise the enjoyment from its stiff opening.