There is a coffin in each stage that you can free (by standing over it), and unlock more characters and based on the hints, Vampire is an unlockable...
The last 10 minutes of this I moved only to pick up EXP, skull dude is hard to start with but his extra projectiles for every weapon every 20 levels...
Just watched a trailer, kind of reminds me of like a tower defense game or an auto clicker game, where the time in = more money to spend = more boom...
25. honest to a fault. passionate. taken. graduated with honors. employed. highly unstable. easily amused. quotes movies, TV shows, and the internet like it's her job. music addict.
hates: mainstream radio, cosplay snobs, and most likely, you