Latest Savage Pixels has a) coverage of said FPS, and a little on the DNA of the genre; and b) a lovely competition to win a super-limited-edition Halo 4 OST box-set...

http://drownedinsound.com/in_depth/4145705-savage-pixels-16--halo-4-and-the-dna-of-the-fps

If you'd be so kind...