Leaving the safety zone, the marine entered a gigantic mining complex that is teeming with activity. Flying mining vehicles whizzed by to the backdrop of glowing magma falls. The atmosphere was more vibrant and brightly lit than expected, and had more of a traditional science fiction vibe to it. The shotgun the protagonist wielded holds these qualities as well, appearing more like something you would see from a Mass Effect game than Doom, but don't worry - the traditional double barreled shotgun makes an appearance as well. As the marine worked his way across high-bound walkways that hovered above the golden magma, signs of trouble became apparent, first with a splattering of blood on the ground, and then with what appeared to be an armless zombie trying to smash its way through a window nearby. And then we saw our first demons. They teleported onto the steel walkway in front of the marine. The effect of the teleport was visually stunning, almost looking like a dusty storm cloud before a demon crawled from its midst.

Then the chaos began. The first blast from the shotgun rumbled throughout the ballroom, drawing cheers from the crowd. The demons didn't stand a chance against its concussive force, and they tumbled and bounced off objects in the environment like pinballs. The impressive AI and staggering technology from id's Rage was on display here, and it looks damn good. But the guns weren't the star of this demo. The marines hands and feet stole the show. Injured demons were eliminated quickly with melee finishers that would fit right in with any Mortal Kombat game.

The demo quickly turned into a slaughter with demons getting shot up and then torn to shreds. Skulls were crushed, jaws were ripped in half, heads stomped from above, arms completely torn off, necks snapped, bodies kicked over railings, and in one memorable case, a heart ripped out of a giant demon's chest and punched down its own throat, where it then exploded.

Even the environment puzzles embrace gore. To open a locked door, the marine stumbles upon a palm recognition security device, but obviously can't use it. A quick scan around the room reveals a dead scientist leaning against a wall. Rather than carry the corpse to the scanner, the marine rips off one of the scientist's arms and places it on the scanner. The hand does the trick, and then slowly (and hilariously) slides off of the scanner.

After mutilating dozens more demons in ridiculous ways, the marine's progress was halted when a massive demon with a grinning skull face and a flaming jetpack flew through the window, kicked the marine to the ground, and beat him to death with his own arm.