This is the most annoying thing I've ever run into. No matter where you are in Semper Fi the VO is shouting "move up and go". Is there an audio file I can delete to get rid of this crap?

Also, I'm at the point where I am supposed to reach 2 blue objects and apparently the point is to help take down enemies. But there ARE NO ENEMIES! Just guns suspended in the air firing by themselves. Enemy fire coming from absolutely no one, so I can't freaking aim at them. Therefore I cannot complete this level as there is no one to shoot at. No point in playing SP any further unless this gets fixed which svcks especially since I now have the swarm gun.