Dead Space Windows, RTX, X360, PS3 game

Dead Space; an adventure through space hell. A alien parasitic life form has transformed the majority of crew members of the USG Ishimura into violent, monstrous mutations. Where the only hope of survival is one of the crew members, an engineer, Isaac Clarke. Conserve ammo and med-kits and attempt to repair crucial parts of the ship to find a way off it. Melee ability is limited, a weak human can only hope to knock these creatures back long enough to reload or run. They are highly resistant to normal organ damage, there weakness is dismemberment. Severing just their head isn't enough.