Changes
From DoomWiki.org
→Final storyline: nope, both dead
Upon defeating the Hunters and gaining their abilities, the Marine shuts down four core systems of Mars to power the old teleporters, sending the marine to [[Phobos]] and [[Delta Labs]], then finally into Hell. Battling his way through, the Marine eventually reaches the Maledict. After a fierce battle, the cutscene shows the Marine fire a rocket at the Maledict, only to miss and end up in the Maledict's jaws.
Betruger's head pops out and demands the Artifact. The Marine obliges by shoving the Artifact down Betruger's throat, instantly killing the Maledict and destroying the Artifact, leaving only Betruger's skull behind. The screen fades to white, and Dr. McNeil's voice can be heard saying, “Marine...Marine...Welcome home...”, possibly implying that both McNeil and the Marine was sent back are dead, and in better place than Hell for sacrificing themselves for humanity. McNeil is dead because the life-support in the base had to Mars or Earth. It has also been speculated be turned off so that the portal could be powered, and the marine died and simply went to heaven because there was no portal back to Marsis dead from his wounds at the end of the battle with the Maledict.
Spoilers end here.
