For me this one is very weird.
I have a working Steam bottle.
Have other games working fine from that bottle (Arkham city, Assassins Creed 2) however I have sound issues with this game.
Whats more I have sound for the intro and menus its only when I start a campaign that my sound goes.
I've only tried the Marine campaign so far but I get no sound at all. No music/sound fx/nothing.
Anyone else seen anything similar?