A two days from the official shops, the boys have released many of Visceral Games Trailer Dead Space 2. In that first link below, some developers go into the details of the main environmental and sound effects, explaining how the intersection of the two elements has produced the high level of tension that accompanies the player from start to finish. The second film is a rather simple gameplay movie.

Dead Space 2 - Video Diary Development
Dead Space 2 - Interplanetary Violence (Gameplay)