in the zombies trailer you can see that Ray Liotta when it tells his story in the news paper puts that he had kill 116 guys. Maybe if you kill 116 zombies with this guy or insert the code "116" something could happen. Well, its just another theory. I didn´t try nothing.
TRAILER: http://youtu.be/My2keV2IIQ0
http://youtu.be/My2keV2IIQ0NEWS PAPER: http://lh5.ggpht.com/Xg8wHNwDgAyKfAn1ircAybbIChqlVKy573Dhc-m3fdeSR90nZmLfipq5NQC CS71CVuOStQ=s170