After you fix the machine, the machine sounds do not stop even to the Woman killing the boy scene. I too get stuck in the room where he is discovered with the 2 bodies. Is there something wrong with this upload?
On the run from the helicopter level, I was able to skip to the next waypoint by running behind the bullet trail when I died. I'll try to recreate it a few times.
 "Loondon"){kind=icon}
 "The Osiris Conflict"){kind=icon}
 "Respawn"){kind=icon}