Mediocre.
This game isn't horrible, but it's not exactly mind fuckingly good.
It's fairly easy to win (or at least hold out) by either not even moving, moving away from the others, or letting the others get the power-ups to either A) freeze/stop the monster or B) die trying.
The flashbombs: horrible. I'm not against the idea, but the flash is much too long. If it was shortened it would be much more tolerable.
This was a decent game. Not great, not horrible. The graphics were cool and I really liked the vampire monster. Just some of the game play needs a little tweaking.