This game was supposed to be perfect, but guess what, it somewhat missed the mark. Although its still a great game!
Sound is all what you expected too. If you have a 5.1 surround for your computer, you can hear in say the rear left speaker if a demon is trying to sneak up on your 7'oclock. This is an amazing feeling...at first. Guns sound very accurate.
But here is the one and really only problem...story and gameplay is well...not all that great or in depth. There is not much too it other than running and gunning. And once you get into the delta lab section...well its kind of dull, and you are feeling "...so yeah...when is this going to end?". But as you make your way to hell, you get that feeling of when you first started the game! More action, a bit more story and whatnot, and sweet environments.