I kind of feel like at the end there was no way to stop yourself from becoming infected, though I'm too lazy to test that theory. I really like what you're doing with the series and I'd also like to play/read the other version of this chapter if you still have it and want to release it. I'm not sure if there's another part yet but I'm definitely going to look.
I personally liked the game a lot, and can't wait to play the rest of the games in the series. I really do hope that this turns out to be a long, great game that I could share with my friends. Definite bookmark for this one, though.
I saved the girl, got the long way achievement, savior achievement, and a couple others that I can't remember. I'm happy you took the time to make the game and would definitely recommend this to a friend or two. Please make more games in the future.