Spec Ops returns in Spec Ops: The Line

[ATB]

I'm not worried about the difficulty per se, but the story is what I'd be playing for specifically.  But I feel like I've heard there are some really awful bottleneck parts where the game bogs down and I don't want the game to stick it to me if I try to get the challenge the rest of the game by playing on suicidal...

Edit: And is there supposed to be sound during the opening cutscene?  I played the opening helicopter part and then it goes to 'earlier' and shows a guy and news clippings and going to stand out on his porch...and there was no sound at all.  During the regular game the sound seems to work fine...