AN: So I decided to make a crossover of Doom and Destiny since no one else has yet, and I thought it would be pretty interesting. As far as Doom (2016) goes, well, it is literally my favorite game ever, of all time, with the exception of the upcoming Doom: Eternal of course. However, when it came to Destiny and Destiny 2, there was one teeny, tiny flaw, that caused me to completely lose interest in the game pretty quickly: shotguns aren't a primary weapon. I'm a shotgun main in every game ever, so yeah. What I'm trying to say here is that, while I am very well versed in Doom lore, Destiny lore isn't my forte, so feel free to correct me. (I do not own Doom or Destiny)

A seemingly floating object wandered through the desolate wasteland. However, this was no mere object, and they were not aimless. He was a ghost, a sentient form of advanced technology, fused with the light of the traveler. This ghost in particular did not yet have the partnership that many others of it's kind did. But he was searching for the right one, a guardian like none before, one that had been through 'hell' and back.

Ghost POV

After endless searching through Old Russia with nothing turning up, I suddenly detected a large amount of seismic activity in the Cosmodrome. The subsequent earthquake died down relatively quickly but not before I found something... curious. I was picking up an unknown energy signature, coming from, underground? This required some investigating.
Some amount of 'digging' later I spotted an ominous looking cave in the ground. Slowly approaching the maw, I knew I was on to something, yet I dreaded entering. Finally, after mustering up the courage to descend deep into the underground, the source of the energy drew near. As I turned the corner, I spotted a very peculiar object. It appeared to be a large, metallic tube, like some kind of vessel, and looked somewhat like a miniature ship. With it's sleek design, air brakes, parachute, and lack of any propulsion system, one could only assume it was some sort of escape pod. It was also the source of the energy signature and human remains could be detected inside. Could this be the perfect guardian I was searching for? I began the arduous process of cracking open the hatch on the front.
Inside, I found a man in a lightweight suit of green armor, albeit with the abs and arms, all the way from the biceps to the wrists, left exposed. He was also wearing black gloves, black boots, and a metallic silver helmet, with a sort of polycarbonate plastic visor. They were an old world space marine, from the same time period in which the traveler was discovered by the UAC. It was assumed everyone in the UAC, including the space marines, were wiped out by the first invasion of the fallen, or some other hostile race, such as the hive, vex, cabal, taken, etc. So where did he come from? Either way, something in me told me he was the one, so I went ahead and blessed him with the travelers light, effectively resurrecting what was to be my future partner.

A different POV

I opened my eyes, wait a minute. What? How? Wasn't I dead? Where am I now? What's going on here? And what the hell is that? I thought, seeing the levitating robotic entity in front of me, studiously and intently holding my gaze. After locking 'eyes' for a few seconds, I swatted at it, but it floated upwards before I could grasp it. I swatted another time, and yet again, it dodged. As I was about to lunge for it a third time, it suddenly stopped me by, talking?

"Do you mind, guardian?", the machine asked. I halted and narrowed my eyes at it. Ok, I'm definitely dead. No way this is happening. "You're very much alive. I chose to resurrect you, with the light of the traveler.", it stated matter-of-factly. Ok, so somehow, this tin can is able to read my mind. And what was that about resurrection? Sounds like a cult. Cult means demons. Wait. Demons? Where? "Umm… demons are fictional. No demons here. Just technology. It may take some time to reacquaint yourself with-" Technology? Cybernetically-enhanced demons? Where? "Listen. There. Are. No. Demons." I crossed my arms and looked at this robot thingamajig suspiciously "Also, don't call me a tin can! Now I need you to listen if you want to live. The fallen are inbound on our location. There's an old abandoned supply depot approximately 6 kilometers South-Southwest of your position. It may contain some weapons. But first, we need to find you a way to climb out of this cave. There are some-" I rolled my eyes and climbed the sheer rock face up and out of the cave in a few seconds. "Oh... OK."

After quickly climbing out of the cave, I let my eyes adjust to the light from the setting sun and took a moment to get my bearings before setting off at ludicrous speed towards the supply depot, leaving tin can in the dust.

As I came nearer, I felt something was off, and stopped for a moment. A shot pinged off my helmet, so I did the logical thing and ran straight to where it came from. The creature that was now in cover popped out for a moment to fire a few shots which I easily dodged. It's eyes widened before closing again, for good this time as I broke its neck with a right hook and it slumped over dead. "From the way you killed that dreg, I submit that you will make a fine Titan." Finally caught up huh? I began running again. Almost there.

Upon arriving, I found a hand cannon right outside, conveniently laying right outside the front door. "Perhaps we should also check the inside for some new armor, your current-" Hell no. I nabbed some nearby ammo, reloaded my new gun, and was about to set off when I felt a presence nearby. "Watch out!" I spun around and spotted some partly invisible fucker 20 meters away and closing fast. "What are you waiting for guardian?!" At 10 meters I made my move. I flipped the pistol up and around, holding it by the barrel, and faster than the creature could react I stepped forward and slammed the butt of the gun down on its skull, after which I proceeded to grab the stunned vandal by the throat and pistol whip it multiple times, fracturing it's skull in multiple areas.

The surrounding area became louder suddenly as multiple contacts came into view. 4 dregs, 2 skiffs, and a captain. I unloaded 4 rounds into the heads of all the dregs, taking them completely off and leaving some weird black stuff pumping out of their neck. Next I shot each of the skiffs in the glass plating on the front, the bullets ripping through circuitry and motherboard alike with ease. The four-armed fallen captain was equipped with some sort of electrified blade in each hand, and seemed to be waiting for something, so I obliged it. After reloading and putting away my gun, I got into my fighting stance.

I inched closer to my opponent who now had nothing but his 4 fists. He prepared to leap at me, but reading his moves ahead of time, I dashed forward and him with a left uppercut right upside the chin, and followed with a right hook. After that he regained his senses and dashed back for a moment before sprinting forwards at me prepared to lash out with all four of his beastly, insectoid arms. However, I duped him with a dodge roll to the right and then used a hopping side thrust to break his knee. As the fallen captain began to fall over, I came from behind and suplexed him, causing him to tumble backwards and end up face down, straining with all his arms to get back up. Nah. As if I would let you. I walked menacingly towards the struggling captain, and quickly spun his head around, which I was rewarded for with a sickening, wet, snap from his neck. That fallen bugger stopped struggling after that.

"We need to find a ship if we're to link up with the other guardians at the last city." Where? "I just marked it on your hud, it's not far." I nodded.

A few minutes and a number of fallen corpses later, the ship was in clear view with a direct path leading straight to it. Of course there was yet another fallen creature guarding it, and this motherfucker was big. "I- it's an Archon! We should find another ship!" I shrugged and pulled out my hand cannon, before approaching the beast and firing all 6 rounds in its skull. It barely blinked. Well shit. If I had a shotgun then this- Something caught my eye. Something metallic. Something cylindrical. Something shotgun-like. The Archon began to shoot at me, and I ducked out of the way and picked up the shotgun, which just so happened to be fully loaded. How generous. I danced the dance of death, leaping and ducking, sliding and rolling, running and gunning. Every blast of buckshot from the shotgun was absorbed by the bastard's ugly face, until finally it collapsed, heaving and down on its knees. As per the usual I walked up slowly to the dying cretin, cocking my shotgun as I did so. When I stopped in front of it, it tried looking up and glaring at me one last time, so I ripped off its face mask, stuffed the barrel in its mouth, and let the resulting blood and grey matter splatter all over the side of the ship. "Did you have to do that?" I gave a thumbs up to my ghost and let it do its thing with the ship.

"Hurry and get in, more fallen are on their way here." I adhered to the ghost's advice… this time. "Let's get going to the tower", the ghost said as I entered the cockpit.

AN: Whelp, that would be my first ever chapter of my first ever attempt at a fanfiction story. If I messed up anywhere, please review and tell me so that I might improve. See y'all on the flip side. Also, the Doom Slayer will be in the story. I have plans for him after all. The action scenes will also be a lot more… violent, once he is there as well.