Too much
I played the first one. I kind of liked it. The interface was good, it had my interest, the robot boss was a little random but okay, and the graphics were great for a Flash game, a lot of work went into it. The writing could have been better, I think this is the third or fourth time I've escaped a lab with amnesia and superpowers, twice I've escaped a lab having had my DNA altered, the other time being just this week (Toxie-Radd). But I can go with it.
But vampires now?
What's going to be in the third one? Sharks? Dinosaurs maybe? I sound like I'm nitpicking but I can't play a game I can't take seriously. Maybe I just need to go play something more compelling like BioShock.