Doom II + Master Levels

After days of fighting on Mars and in hell, you successfully defeated the demon forces and stopped the invasion. Though your efforts are marred by being the last survivor of the bloody massacre, you are nevertheless hailed as a hero. Surely that entitles you to some well deserved R&R, right? Not if those demonic bastards have anything to say about it. Landing on Earth following your discharge, you open your pod to a world of fire and blood as the demons have invaded your homeworld. With everyone...