Celestia gritted her teeth as she held her barrier, feeling both the monster slamming against it as well as the spells and spears that the royal guards shot and thrust through it to fend them off. Nearby the survivors of the raid upon Canterlot and the castle staff trembled in fear, doing their best to comfort each other.

“Discord, I can’t keep this up forever. Just how much longer before your so-called ‘specialist’ gets here?” she asked, a noticeable edge of frustration seeping into her voice.

“Sorry Celly, don’t know for sure, but considering where I sent him it probably won’t be more than a few hours at most,” Discord replied.

“That’s not exactly comforting,” Luna growled, lying on the floor to catch her breath and regain her strength so she could go where she was needed.

Just then, a small pool of magma began to bubble up inside the throne room, and out from it came a hulking beast, its body seeming to be made of rock and flesh as it stood on two legs and had two arms with massive spiked shoulderpads. It didn’t have a head and instead had an opening in its chest that seemed to be exposing a fleshy cavity. In its left hand was a staff, and in its right a mace-like weapon with a rounded head. Despite its sudden appearance it seemed to just stand there, motionless. However, a small worm-like creature with glowing green bulbs and a sharp maw slithered into the cavity. It let loose a high pitched shriek as the plate on the front of the golem-like armor closed. It then lit up with green energy for a moment, some strange runes on the front plate glowing, before it raised its club and intimidatingly slammed it into the floor, cracking the marble, and letting out a muffled shriek from the creature inside.

“Neither is that,” Discord muttered as Luna shot up and grabbed a halberd in her magic, the other ponies screaming in terror.

As if that was enough, two more identical golems bubbled into existence on either side of the first, the only difference between them being one only had a mace while the other only had a staff, the worms quickly taking their places inside.

“Oh boy,” Discord meeped.

“Discord, do something!” Celestia cried in a mixture of anger and fear.

The draconequus gathered his magic and erected a barrier in front of Celestia, himself, and the other ponies huddled around them.

“Come on, you psycho, where are you? We’re holding out the best we can!” he muttered under his breath.

A single train engine approached the Canterlot Train Station, catching the attention several demons’ attention and causing them to converge on the vehicle as it came to a stop. Within seconds there were no less than thirty demons of all kinds ready to destroy whatever had foolishly decided to waltz into their sights. A Baron of Hell grabbed the door and ripped it open, only to be caught facing the end of a massive weapon emitting green light. The weapon unleashed a large green energy blasts that immediately atomized the unfortunate creature, and the arcs of energy that cascaded off it did the same to all the poor fools that had gathered too close.

The Doom Slayer casually stepped out of the train, turning his head until he saw the golden barrier around the palace. He changed out In-Flight Mobility and Seek and Destroy runes for Armored Offensive and Savagery, equipped the Mobile Turret attachment to his chaingun, Siege Mode for Gauss Gun, and then switched out the Tactical Scope on his Heavy Assault Rifle for the Micro Missiles. He then pulled out his Combat Shotgun, pumped it, and then sprinted towards the palace. It didn’t take long for him to come across more opposition, his rage building in anticipation of the slaughter he was about to create.

He leveled his combat shotgun for a moment and fired and explosive shot into a group of Possessed, hitting one dead on and killing it with an explosion that broke into smaller cluster bombs and took out or wounded several more. Some imps jumped up onto the walls of some houses, and the Doom Slayer responded by pulling out his Heavy Assault Rifle, quickly picking off the ones on his right before leaping up towards the roof of a nearby building, dodging the fireballs thrown by the ones on the left, and pulling himself up onto the roof quickly before unloading onto the other imps as he dodged while strafing to evade the fireballs. A Cacodemon approached from above, launching its bile, which he rolled away from, switching out for his rocket launcher as he did, locking on and quickly firing a three round burst, before switching out for his Super Shotty and unloading both barrels, causing it to stagger. He then jumped up and grabbed on before swinging himself over and punching straight through its eye, killing it. As he absorbed health and armor he fell back towards the ground, tossing two frag grenades into the horde of demons before switching out for his combat shotgun and firing another explosive shot. He landed just as they all exploded, taking out a large swath of Possessed and Imps in front of him and damaging many of the stronger demons.

He immediately pulled out the gauss gun and charged the seige mode blast, firing into the crowd and taking out swaths of the weaker enemies with each blast. After a few shots a Baron of Hell tried to attack from behind, which he rolled out of the way of, before firing a normal shot from the gauss gun into its face, causing it to flinch. Two Hell Knights jumped at him from behind, which he double jumped away from, switching to the rocket launcher and locking onto all three of them before firing, one rocket hitting each one. He then switched to the heavy assault rifle, unloading on one of them with the micro missiles until it died before quickly changing to the plasma rifle and hitting the other Hell Knight with a stun bomb, quickly moving in and kneeing it in the face before crushing its skull with a punch. The stun energy erupted and managed to strike and stun the Baron of Hell, which the Doom Slayer took full advantage of by ripping off one of its horns before stabbing it into its face. Both released health and armor as the Doom Slayer turned to to face an oncoming group of possessed soldier and Hell Razers, which he greeted with an explosive shot with the combat shotgun, scoring a direct hit on the Hell Razer and severely damaging at well as those around it. He quickly mopped them up with some sustained fire from the plasma rifle only to be knocked away by an explosive shockwave from a nearby Mancubus. He quickly recovered, rolling to the side to avoid its flamethrowers, tossing a frag grenade at it before laying into it with more blasts from the plasma rifle. Once the grenade exploded he rushed up unloaded both barrels of the super shotgun into its face, turning it into a fine red mist.

As more demons swarmed him he decided to use a little strategy, picking off the Lost Souls that screeched and charged him with the heavy assault rifle before switching to the plasma rifle and firing a stun bomb into a group of Possessed, hitting about eight of them. Instead of moving in for the kill he waited, letting the Hell Knights, Barons of Hell, and Pinkie Demons get closer while laying down fire with the chaingun. When they were only a few yards away, he sprinted at the closest Possessed and killed it by ripping off its arm and using it to crack its skull. The burst of stun energy hit the nearby Pinkie Demon, stunning it as well. The other demons just had enough to realize the trap they fell into before succumbing to it. He kicked out the knee of one of the Possessed before cracking its skull with a hard punch, then leaping on another, forcing it to the ground on its back, grabbing its head and slamming it into the ground hard enough to crack it open. He swept the leg out from the next one before punching it in the face hard enough to make it explode, then jumping on another's back and forcing it down to the ground before stomping on its head like a melon. The next two he killed with two quick punches hard enough to smash their skulls before grabbing the last one from behind and snapping its neck. With each kill another blast of stun energy was unleashed and by the time he was done all the more powerful surrounding demons were just as helpless.

Wasting no time, he lunged at the nearby Pinkie Demon and ripped out one of its tusks before using it to stab the demon in the eye. He grabbed the next one by the tail and ripped it off, causing the monster to screech in pain before swinging the appendage like a club into the beast's face, killing it. He ripped the gaseous organ off the chest of a nearby Mancubus before shoving it down its throat, causing it to explode, before uppercutting a Hell Knight and then breaking its neck with a savage kick. For the Baron of Hell he whipped out his chainsaw, ripping through one of its legs, causing it to fall over, before slicing through its mouth, separating the top half off its head from its bottom, releasing plenty of ammo.

As a horde of Possessed Soldiers, Hell Razers, and Imps charged at him, the Doom Slayer pulled out the chaingun and immediately activated mobile turret mode, unloading the constant stream of lead into the oncoming horde, mowing them down. Many of the Imps leaped out of the way in time, climbing on walls and buildings before hurling fireballs at him. The Doom Slayer responded by aiming the chaingun at them, managing to hit quite a few, with the rest leaping out of the way and trying to flank him. Two of them shot fireballs at him from the sides and he rolled out of the way, changing to his super shotty and blasting them. Another leapt at him from behind, managing to tackle him to the ground, but he quickly rolled with it and managed to get on top before grabbing its head and ripping it from its neck. He then hurled it at another that tried to leap at him, knocking it out of the air and flat on its back. It tried to pick itself up only to be met with a double-barrelled blast to the face.

The Doom Slayer reloaded, paying no mind to the small army of dead corpses that were fading into nothing around him, before charging towards the castle, ready for more slaughter.

Thirty Minutes Later

Celestia watched helplessly as Luna took another blow, sending her to the floor, managing to recover quickly enough to dodge a blast of energy that followed. Luna had managed to cause some damage to the three demons, even managing to strike their magic staffs, causing them to be unable to summon their barriers, but she was still clearly outmatched. It was all Celestia could do to hold the barrier keeping the armies of demons trying to get in and keeping the royal guards that were fighting from behind it safe. Then, oddly enough, she felt the unending attacks from one part of her barrier cease completely. She wondered what this meant only for her to feel something else enter, something she didn’t recognize.

What is that? Could it be Discord’s “specialist” is finally here? she hoped.

Then, seemingly out of nowhere, the three demons stopped attacking Luna and all turned to face the door. There was a massive bang that rattled the locked gated, followed by another that shattered the drawbar, and then finally the doors were smashed open, one of them falling off its hinges. In stepped a bipedal creature wearing an advanced green and black armor that was heavily battle worn. Despite having a glass visor, the tinting kept its face invisible.

All of this was overshadowed by the intense, overwhelming aura of hatred and bloodlust that emanated from it, enough to make Celestia’s blood run cold, her body to break out in cold sweats, and her heart to beat in fear she hadn’t felt since she was a scared little filly. The feeling was more intense than Tirek, than Sombra, than anything she had ever felt before. And she wasn’t even the target of it. Luna felt the same thing, stepping back slowly and barely able to breath out of sheer terror.

“Lulu, get inside the barrier now!” Discord ordered. Luna hesitated only for a moment before sprinting inside the relative protection of Discord’s barrier, adding her magic to strengthen it.

“Discord, what have you done?” Celestia asked in fear. “I thought you had sent us a hero, or at least a professional. Instead, you just brought a bigger monster!”

“Celly, shut up and let him do his thing, and we’ll make it out of this alive!” Discord snapped.

The room was silent, nopony dared to move. After what felt like hours of intense tension, the armored creature sprinted forwards and raised its weapon as the three demons charged.

Author's Note

Woot! It's finally here! Two more chapters left! Sorry for making you all wait. Also, to those of you who wanted to hear BFG Division, sorry but this just fit the mood I was going for better. I hope it's an adequate substitute.

As always here's the song the chapter is based on, one of the most over the top metal songs of all time: