My friend was tellling me that all throughout the campaing hints of the "zombies invasion" were dropped. I didn't notice anything except for obviousey the part after you beat campaign alltogether. Is he just bull-blam!- me or did I really just miss this part alltogether?
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[url=http://t1.gstatic.com/images?q=tbn:ANd9GcRmK_d8UnFj9mIj5qUNGJRNz8920yiV3D2ADcoIfxPqvn9jAjhVow]Wutlolski?[/url]