Author Note: this is the reboot version of an old story called "Doom Slayer of Zero". I thought what the original had a lot of loopholes, stupid dialgoues and there wasn't enough blood and gore, so I choose to fix all chapters I had made. Hope you'll enjoy the reboot version of fic.

Other stuff: No promices about harem. Saito from anime will appear in the future. There'll be OC too. Doom Slayer has all upgrades, full weapon/rune mastery and unlike in the game, he can use all runes at once, not just 3 runes at once. No 'armor' and 'health' bars anymore. Able to go Berserk at any time. What about other power ups? His suit allows him to use any other power up at his own will, but only when it has an argent energy overload.

Chapter 1: Another Journey.

Ruins of Argent D'Nur/Hell dimension.

Home...

Long time ago this place... was his home. Argent D'Nur... He remembered the times when it was... different. When his order was at it's strongest, when Argent D'Nur was at the dawn of its glory, when it was full of life and beauties of nature. Those are the times when he was... Happy. Calm... And at peace.

It was painful to see this place like this... But the most painful part, was that Argent D'Nur had fallen because of him. Grief and Despair blinded him and made him accept the Dark Lords deal...

To bring his son back, he had to help them to take over the Argent D'Nur.

He hates himself for believing every word from the Dark Lord's mouth. He hates himself for following their instructions. He hates himself for not doing anything to stop them. He hates himself for letting his son turn into a demon, but...

They are the ones who planned all this. They are the ones who used his broken heart and his pain as their main weapon. They knew that a parent, who lost his child, was ready to do anything to bring him back...

They made a big mistake when they thought what they can F**k with him and walk away like nothing happened.

I have news for you, Demons... The Doom Slayer has come here to feast on your blood once again... After eons spent in that sarcophagus.

"Kill Him." Ordered the voice of the Dark Lord. And when the order was given, a horde of demons appeared from the red light around him. They all screamed/roared in unison and rushed to their target.

(DOOM OST 'BFG Division')

Doom Slayer materialized his HAR with micro missiles attachment and fired away on a group of imps, tearing their bodies to pieces instantly, but some of them actually managed to survive the explosions and came closer to him... only to be torn apart with his bare hands in next few seconds.

The other group of imps rushed to him, flinging fireballs and claws readied... Unfortunately for them, most of them stood in a line and got turned into a bloody mess with a single shot of the charged Gauss Cannon.

The next opponent was the Summoner, he was throwing a wave of Argent energy in Doom Slayer's direction in an attempt to slice him in half. It managed to get the Doom Slayer, but his armor suppressed most of the damage. Doom Slayer took a Rocket Launcher and used the Lock-on burst mod, three missiles stunned it and he went for a glory kill.

He torn Summoner's hand and smacked it over the Hell Knight's face. 20 gauge shells tested the toughness of his eyeless skull afterwards.

Doom Slayer heard behind him a Pinky, which with a screeching roar rushed on him. He made a double jump and landed behind it to cut its back with his chainsaw. He then switched back to the double barrel and shot the Revenant's head.

A cacodemon started to shoot energy spheres at the Doom Slayer... He was simply dodging them before he jumped at the top of the Cacodemon and hit it with all his might in the eye, making it explode. Doom Slayer was on the free fall...

For a little while. Because He landed on the Hell Razor's head and then used a Combat shotgun's explosive shell to kill the rest of the lesser demons around him. He saw more red lights and more roars followed afterwards. He needed to get rid of them. Fast. Luckily for him, he found a purple sphere of energy and absorbed it.

The Quad Damage Kicked in. Doom Slayer took a Super Shotgun and rushed on the first demon on his way. Then to another one... And another...

One by one, they were turning into a pile of gore and the last thing they had heard, was the sound of his shotgun reloading...

Once Doom Slayer finished the cyber mancubus, he Heard the roar of the biggest demons among those who were sent after him... A couple of Hell Barons came to join the slaughter. The Quad Damage almost wore off, so he needed to act quickly.

He jumped in front of a Baron of Hell and fired his Super Shotgun twice, tearing the half of its upper torso. He put the next shells in his shotgun and started to shoot at the second Baron... Unfortunately, Quad Damage already wore off, but his suit just recently got an upgrade, so an explosive wave of energy was released and knocked the Baron off its feet. Now it was the time to finish it.

Doom Slayer took the lower and upper jaw and started to pull them in opposite directions, Ripping the Baron's head in half. That was the last one... For now.

(Music slowly ends.)

Doom Slayer started to look around to make sure he killed everyone in here and started to walk in the direction of one of the Well's sources.

Those sources are his long ago fallen lords... The Wraiths, powers of which were taken over by demons. The wraith's lower part of body was looking like the body of the spider, and upper part of it was like a Summoner with big ass horns... Even though The Wraiths were never of demonic heritage, they sure looked like hell...

It was a sight only to grieve upon. Held in endless torment and literally turned into a damn battery against their own will. Their face expression could describe the pain they were in...

'You had suffered enough, my lord...' Doom Slayer climbed at the top of the Wraith, took the Crucible and plunged it into the Wraith's heart, absorbing its energy and finally putting it to rest. When the energy was sucked out of the Wraith, some remnants within it exploded, knocking the Doom Slayer backwards. When he got up, he saw a figure that made the look in his hardened eyes ease up a bit...

'...Brother...' he saw his fellow warrior, a Night Sentinel... One of the few chosen by the Wraiths... But not an alive one – a ghost of a Night Sentinel.

The figure pointed to the direction of the next wraith. Doom Slayer nodded and went to the next source...

...

Few hundred bodies hitting the floor later.

The lords were finally put to rest, but his job was not over. Not just yet...

He put the Crucible behind his back ('endless pocket' and Crucible conflicting with each other. Since the 'endless pocket' works on argent energy and The Crucible is literally consuming the argent energy) and went in a direction of his next objective. His last objective was simple enough...

Kill Olivia Pearce. The woman, who started the Hell invasion on Mars, forced people to worship the demons and also killed thousands of innocents. (64 337 people if I'm correct.)

"You could not have saved them anyway." Her words echoed inside his head. She told him that when she was re-routing all power to the Argent tower to tear open a portal to Hell.

She was right. He could not have saved them, but he knows what he has to do to save all those, who survived...

He has to fight. Fight for those who are still alive. Fight for every innocent soul. Fight in the name of those, who have fallen. Fight for the fall of the Dark Realm. This is his path... the path of The Doom Slayer. And he is never going back from it.

He approached the crack in the mountain where he saw 4 ghosts of the Night Sentinels. They stood there like they there protecting the way from demons, so the Doom Slayer could deal with Olivia with no problems.

One of them looked at the Doom Slayer and showed a sigh of respect (fist to the chest with slight bow), which Doom Slayer had returned back to that Night Sentinel before jumping to his destination. 'I made a lot of mistakes my brothers... The mistakes I still regret for... But now... now I know what must be done.'

...

"They promised me so much..." sadly noted Olivia Pearce. When she was making the deal with the Dark Lord, she expected what she'll finally get all the awards, fame and money. That she'll be her own boss and everyone is going to do what SHE says... Since Doctor Hayden had stolen her work, not said even a simple thanks, nor even paid her for a honestly finished job. He just used her like a puppet. She expected that it'll be different with Demons...

But she was wrong. They proved to be even worse than Hayden could ever be. Now she realized how strong she messed up... But there's no turning back from it now...

A red bolt of energy struck her and she began to slowly drown inside the demonic rune. The Olivia Pearce was dead, but something new and horrible was born from her at this moment...

She turned into the big, spider-like Demon with a pulsing brain, one plasma cannon and six laser cannons on her body. After the "rebirth", it noticed that it was not alone. There stood a human in a green armor with the double barrel shotgun in his hands.

The armored figure waved his hand (Bring it on) to the Spider Mastermind and switched his body into a battle stance.

(DOOM OST 'Mastermind')

The Spider Mastermind gave away a battle roar and slowly started to approach the figure on its feet. It attempted to shoot the figure with its plasma cannon, but he just dodged it with an ease and shot at her from the double barrel. At that distance, the double barrel didn't do much damage to the Spider Mastermind, so he switched his weapon to the Gauss cannon and used a bolt shot. It seems to work pretty well in this case.

About 5 shots later, Spider Mastermind sat lower to the ground and fired up lasers which were slightly moving around. Armored figure just kept firing from Gauss Cannon while he was dodging lasers. Spider Mastermind then made a flip to hide his brain under the mass of its body, now it was a bit problematic to get a straight shot to the head.

The figure switched to the Rocket Launcher and used Lock-on burst on the four-legged abomination, stunning it after 3 Lock-on burst attacks. He took the opportunity and used the Chaingun's Turret mod. When Spider Mastermind recovered from the stun, it electrified the floor, taking the figure by surprise.

Figure got hit by a 3000 volt charge, though it wasn't enough to even weaken him. He jumped at the platform which appeared right next to him and kept using Lock-on burst mod. Spider Mastermind had enough of those rockets, so he used his brain to make the spikes appear from those said platforms, fortunately because of that, floor was not fully electrified, so he jumped down from the platform to the ground, and while he flew to it, he fired two 20 gauge buckshot shells in the brain of the spider demon. It seemed to do a LOT more damage than the first time...

Even though the Spider Mastermind weren't able to stand on its legs anymore, it still was able to attack. Armored figure kept running/shooting around the Spider Mastermind until it gets really vulnerable.

Few Super shotgun shots later, Spider Mastermind was down, but not quite dead... an easy problem to fix.

He took the upper jaw of Spider Mastermind and placed his foot on its lower jaw in an atempt to open its mouth a bit wider. When he did, the figure put a Very Big Weapon with green glow in Its mouth and started to charge the weapon. The eyes of the Spider Mastermind were full of fear... Because it recognized it's opponent...

The Name, that Shall never be mentioned...

The Name that's been written in the tablets across all of Hell...

The Name, when mentioned, brings terror in the hearts of the demons...

The Doom Slayer

In that moment of realization, the BFG - 9000 was charged and the energy was released in the gaping maw of the Demon, digging a hole in its brain. This battle was over. Hell portal is closed... But demons are far from being defeated, and the dark realm lingers on.

(Music ends)

He wanted to continue his torment... But the universe was thinking overwise. Because the instant pain, caused by the tether device in his suit. Doctor Samuel Hayden was calling him back.

...

Doom Slayer apeared in some room... Obviosly in UAC facility. And he saw one familiar cyborg in front of him.

Doctor Samuel Hayden. A CEO of the UAC. An over typical crazy sciencist with brain canser who thought what Hell would make a perfect source of energy... He just can't understand how wrong he is.

Samuel started: "You've won - It's over. You stopped the invasion and closed the portal." Doom Slayer would disagree on this part already. While the demons and Hell are still existed, the fight will never end.

"But it's come at a price - Argent, VEGA. This entire operation. You see, I've watched you work - Come to understand your motivation." Doom Slayer was now paying more attention to what he was saying.

"You think the only way is to kill them all - leave nothing behind - and you may be right."

'I Am right you f***ing moron.' he commented.

"But we can't just shut it all down. Without Argent energy it will be worse. I don't expect you to agree." Then he took the Crucible from Doom Slayer with some sort of an argent magnet.

"But with this we can continue our work." Doom Slayer didn't tolerate the fact that this robot dares to take something from him without his permission, so he attempted to move himself and grab that tin can... But somehow he couldn't move even an inch of his body.

'Why can't I f***ing move?!' He kept trying on moving his body as much as possible... Still no effect.

"I'm not a villain in this story. I do what I do because there is no choice." he tryed to excuse himself. Doom Slayer obviously didn't bought it.

Then some VI informed: "Re-routing tether coordinates... Complete."

"Our time is up. I can't kill you, but I won't have you standing in our way." the energy from the Crucible formed into a big red sword with runic symbols on it.

"Until we see each other again." was his last response before he took his leave to the doorway. The rage was curding inside the Doom Slayer. This f***er is going to continue his experiments with Hell... And the incidents like this will happen over and over again. The fact what he can't do shit right now angered him even more.

Pain once again was caused by tether system and he was sent away from the UAC. Away from mars...

...

Darkness. That was the only thing that was surrounding him. There was nothing: No demons. No ground. No air... Nothing. Just void and darkness.

Every second he was getting pissed. Because he couldn't do anything to stop that cyborg, he was stuck in this place with no demons to kill.

He was about to just start sending punches into the nothingness when a sudden light appeared and he saw someone familiar... Someone who helped him on his journey long time ago...

The Seraphim. A holy being, who gave him immortality. Who gave him powers when his own were failing him. Who gave him the memories from his past lifes so he could be a master in every way of fighting.

Seraphim was a bit shorter than the Doom Slayer, wore a brown cloak with hood, hiding the most parts of his face. Except from silver colored beard. (Noone knows how Seraphims realy look like, known only what they literaly burn with the glory of the 'All Mighty' and the fact what they can take any form they like. For example, this Seraphim took a form of 'Obi Wan Kenobi' from 'Star Wars: Episode IV - VI')

"It's been a while old friend." spoke a wise and powerful voice. The rage inside the Doom Slayer cooled down a bit.

'It's Good to see you too Seraphim.' He responded... Not with his own voice, but his mind. Since His throat was still not in the perfect condition. ('Mind talking' works because Seraphim and Doom Slayer had a link between each other)

"I'm glad to see that your memory is still with you." Seraphim said, smiling. Despite the fact what Doom Slayer was realy glad to see him, he remembers what Seraphim doesn't usualy come to just say 'Hi'.

'What are you doing here? You usually don't appear for no reason.' Seraphim took his chin and thought about it for a while "Knowing you, asking you about going on retirement is pointless... So let's get straight to the point." Slayer gave him a bit irritated look, but chose not to say/think anything.

"There's a problem in another dimension. A problem that involves Hell." Doom Slayer was not pleased when he heard that Hell managed to find its way somewhere else, but he couldn't just split in half...

'First, I need to deal with Hayden and his experiments with Hell and then...' Seraphim did not let him finish. "Do not worry about Hayden. Yes, he has the Crucible, but it will take him years to get any results from it." small point...

but it's a point anyway.

Doom Slayer didn't want to leave it like this, but he had no other option... for now at least. 'Okay, I'm listening.'

"Halkeginia. A world similar to medieval ages from Earth's dimension... I hope you remember Earth?" it sounded like some sort of weird teasing for Hell Walker.

the memories of his past lives kicked inside his head. The memories like: Nazis taking over the world, execution of the 'Terror Billy', asshole CEO who tryed to kill a group of civilians and many other memories connected to Earth. 'You gave me those memories, and you still asking me about them... Really?'

Seraphim shrugged "I was just making sure what my gift didn't wore off. Anyway, about Halkeginia..." he took some while to remember where he stopped the last time.

"Ah! Remembered! Beyond the fact what it has a monarchy way of ruling... nobility there comes through magic." he was talking sadly on the part 'Nobility trough magic'.

'Nobility trough magic? What kind a f***ing bullshit is that?' to say that he was pissed was an understatement. This is the worst system humans could have ever created. It literally says: 'Strong take whatever they want and weak obey'. He already despised that 'Halkeginia'

"I don't like it myself... But please, could you just calm down?" Seraphim tryed to convince the Doom Slayer to calm down.

'Count to four, Inhale. Count to four, Exhale.' Doom Slayer choose to listen to his friend and used an old fasshion way to calm himself.

"You will appear there through the summoning ritual perfomed by a girl named Louise Valiere. She got a lot of issues, but do not try to harm her. She is the key." he warned him.

'Why is she summoning me?' was an obvious question he didn't get an answer for "There's no time to explain. For now, you need to know only one thing..."

The Seraphim leaned a bit closer to the Doom Slayer and told him with all the seriousness he could've put in his words: "The Void had returned. And you are the only one who can stop it."

Doom Slayer seems to be a bit confused on this one. 'And what the f**k is that supposed to mean?' Seraphim just smiled and casually responded:"You'll find it out sooner or later."

"My servant that exists somewhere in this vast universe…"

'The Hell?' was first Doom Slayer's reaction.

"…my divine, beautiful, wise, powerful servant…"

Why that girl was going through a summoning ritual? Why is she summoning him? He understands that those questions should be addressed to The Seraphim, but knowing him for such a long time made him learn one thing:

Seraphim never ever shows all his cards to anyone... exception being the 'All mighty'.

"…heed my call. I wish from very bottom of my heart that you heed my summon and appear!"

Then some colorful portal appeared in front of the Doom Slayer.

"This is your way out of this place." Seraphim said. Then he slightly showed the Doom Slayer into the portal's direction.

"Do not forget what I told you. When we'll meet again, I'll give you more information." Those were his last words before the Doom Slayer was sucked into that said portal. Inside the portal, his suit made some strange noises... Like something just went broken and it followed with some electricity sparks. It was the Tether System.

Good news for Doom Slayer. He didn't need to worry about being sent in some shithole again. Bad news for Doctor Hayden... he won't be able to send Doom Slayer away again.

Anyway, Doom Slayer could only guess what's gonna happen when he'll reach the end of the portal. His paranoia/gut told him to be ready for combat, so he prepared his Super Shotgun. All he needed to do now is just wait...

...

Halkeginia. Tristian Academy of Magic

Louise, a young sixteen year old magician in training, in her second year of Tristain Academy of Magic, woke up.

Sitting up and stretching her arms and legs, Louise gave off a cute sound of 'Hmmm' from her stretching.

She brushed back her long, pink hair with a pink brush, in front of her expensive mirror, which was mostly made out of gold, with the glass in the middle and golden flowers at the sides and above the glass, as she hummed a soft tune.

Afterwards, she slowly dressed herself, changing from her pink night clothes, for a white shirt and black skirt. She slid on her black knee-high socks and put on her black cloak, with a golden medal with a pentagram in the middle of it, right below her neck, which was used to tie on the cloak.

She then picked up her short, wooden wand and began her day.

She did all of this with a derpy look on her face; a look that meant that she was still half-asleep.

She then made her way to her first class for the day.

Today was the day of the Summoning of the Familiars. The entire class was gathered outside in the wide, grassy courtyard, excitably waited for their instructions, with only a blue haired girl not caring as much, as she read a book. The class excitably talked to each other, waiting for their teacher to start the class, and thus the summoning for their new, lifelong familiars.

"Finaly, today is the day of the summoning ritual. This is the first test since you advanced to the second year, and the sacred first day when you meet your familiars, with whom you will spend your lives as nobles." Said a balding man - professor Jan 'Jean' Colbert. He was a kind and caring teacher, who looked out for his students.

Louise clenched her wand, as she waited her turn with a worried look on her face. She wondered silently to herself, if she would fail her familiar summoning.

"I'm looking forward to seeing the amazing familiar you're going to summon!" A red haired girl, with tan skin said, appearing behind Louise out of nowhere. She wore the same outfit as Louise, as the rest of the females in the class, except that her front was more revealing; flaunting her bigger than normal chest.

"Leave me alone." Louise replied in a monotone voice, looking away, with an annoyed look in her eyes. She did not want to deal with a Zerbst, after all. The red haired girl, Kirche Zerbst, came from Germania via transfer. Her family and Louise's were bitter enemies, through some dealing in the past, and so, the two naturally didn't get along.

As the students summoned their familiars, some amazing and some not so amazing familiars appeared. Cats, birds, snakes, toads, owls, and a bugbear were some of the few that were summoned. Don't ask why it is called a Bugbear. Nobody knows.

Up next, was a blonde boy, and a big playboy, a son of a general, Guiche de Grammont. His familiar appeared from the ground below, popping out of the ground with a miniature quake. A mole was his familiar.

Afterwards, Kirche summoned a tiger-sized salamander, with a flame at the end of its tail.

And even later than that, Tabitha had her own shot, and she summoned a blue dragon, called a wind dragon.

"Now, was that everyone?" Colbert asked, looking over the class.

"No, we still have Miss Valliere to go." Kirche replied with a devilish smile on her face as she looked at Louise. Louise walked forward nervously.

As everyone made room for Louise to do her summoning, which would most likely summon something amazing, amazingly explosive, she whispered to herself, "Please, be something cool..." hoping that she will be able to summon a mighty familiar.

Colbert gave Louise a nod, telling her to begin.

Clearing her throat, she closed her eyes and began the summoning.

"My servant that exists somewhere in this vast universe…"

"…my divine, beautiful, wise, powerful servant…"

"…heed my call. I wish from very bottom of my heart that you heed my summon and appear!"

After the chant was finished, happend the big explosion and there was a lot of smoke.

Kirche said: "well I couldn't expect anything better from Louise the Zero"

"Shut up Kirche. I just messed up a little bit..." Louise said, a bit irritated by the red haired.

Two of them kept arguing, but Tabitha took a look into the smoke... She noticed something...

"Movement." she interrupted them.

Louse and Kirche stoped their arguing and started to look into the smoke.

When the smoke wore off a bit, most of the students was taken aback... There stood a tall, muscular, human-like being with some sort of a musket in its hands. Now, the question is...

What's gona happend next?

To be continued...