This is on shuffle.

The first song is the overall theme for the Apocalypse... Crimes by A Perfect Circle (Pretty good actually for a theme)
The second song is what plays when you kill your first zombie... Fantasy by The Xx (Awesome choice!)
The third song plays when getting chased by a horde... 28 Theme by John Murphy (This is PERFECT! Haha)
The fourth song plays when you have to kill your loved one... New Way Home by Foo Fighters (Not at all close...)
The fifth song plays when you find a group of survivors... Your Skull Is Red by Team Sleep (Meh)
The sixth song plays when you meet a new love interest... Smack My Bitch Up by The Prodigy (Slightly inappropriate)
The seventh song plays when you have to make a final stand... Take Me Somewhere Nice by Mogwai (It fits)
The eighth song plays when you think you've survived it all... Apple Tree by Wolfmother (It's ok)
The ninth song plays when you discover a bite mark on you... Original Fire by Audioslave (Terrible)
The tenth song plays over the end credits... Ziggy Stardust by David Bowie (It will do)