i couldnt find anything related to this topic when searching for surround sound, so:
are you guys planing to add “real” surround sound to the game? as far as i can tell there is none currently in the game.
it would be a huge immersion bonus for me and should make specials or single enemies behind or around you more predictable.
i also think that the audio mixing could need some tweaking as well. specials should be louder when fighting hordes and so on.