What you should do is make 2 virtual machines and throw CentOS on one and Arch Linux on the other. After that, install and run Bastille Linux on the CentOS box and try to break into it with the Arch box. Have fun! :D
This may sound like I'm being picky, but I think that moving the zombies into a 3D environment kind of lost their "character". I used to do 3D animation so I can appreciate how hard it is but I'd recommend editing some 3D Studio Max's default materials.
You can easily mix and match materials and I think that the trailer would be much better with a brighter colour palate. Other than that, it was very good. I don't want to try and bring you down or anything, I just want to make a small suggestion.