Not too bad but a few things.

1: You get attacked by two police officers right away which makes it really hard to get the hang of the game. It took me quite a few attempts to even get a decent score. I suggest putting the police on the opposite side and not have them hone in on you immediately.

2: It's far too easy for a villager to see you or another Vampire feed due to a lack of obstacles and because the map is so small. As such, I really didn't depend on the Vampires too much so I'd suggest one in ten or one in five will turn into a police officer.

3: It got to a point where the town was empty and new villagers didn't come in enough for me to survive much longer than a few villagers. So I suggest making the number of villagers coming in random from one to five or ten.