This guide saved my bacon so many times it is not even funny. it only took me 15 hours and 15 minutes, and that is with 10 deaths in the game total. Heck the hivemind at the end didn't even cause me any damage at the end. At the end I even had 415,345 credits, 35 power nodes, 25 large med packs, and 5 peng treasures, as well as a fully upgraded: line gun, force gun, pulse rifle, and plasma cutter.
I can't wait until Dead Space 2 comes out.