Sorenson was a C.E.C. worker, and was part of Shift 2 on the Sprawl. Along with survivors from his shift, Ellie, and Kaleb, he was trying to escape the Sprawl. What happened to him is ultimately unknown, although the fact that he failed to escape Titan Station before it was destroyed at the end of Dead Space 2 certainly suggests death, regardless of whether it was a Necromorph or the explosion itself.