We open up with Vodx in his surveillance room with overlapping videos from various cameras stationed aroud Hazbin Hotel playing to him. 

Vox: No fucking way! They're going to fight? Oh, my god. Hahahaha! Oh, looks like your little hotel didn't work out so well. Oh, Alastor, I cannot wait to you get FUCKED! HAHAHAHAHAHAHAHAHAHAHAHAHA! 

At the Hotel... 

You were training the cannibals to wield the angelic weapons as Twilight armed herself with some angelic swords. 

Sunset wielded angelic daggers, a spear on her back, and some gauntlets. 

Sunset: You ready? 

Twilight: You bet. 

The two high-fived. 

Charlie: I really wish my Mom was here to see this. 

Vaggie: The cannibals seem ready to fight. Are we?

Sir Pentious comes out of the hotel, wearing a Victorian-style British army uniform. 

(Y/N): What the hell is Pentious wearing? 

Pentious: That's General Pentious, reporting for duty!  I'll turn those rapscallions into soldiers in no time at all!

(Y/N): Love the attitude. 

Niffty: Anything I can do? 

Sir Pentious: I'm glad, you asked, soldier. The base needs fortifications. Reinforce the southern wall! Create a moat around the perimeter to stop a ground assault.

Niffty looked with confusion. 

Twilight: Hey, Niffty. If you see an angel, just attack it with this. 

She gives Niffty a little blade. 

Niffty then sees Angel Dust. 

Niffty: HAHAHAHAHAHAHAHAHA! 

She charged at the porn star with her weapon! 

Niffty: STAB! STAB! STAB! 

Angel Dust: HEY HEY HEY HEY! 

He climbed up a nearby pole to safety. 

Sunset: How did he do that so we- Oh right, he's a porn star. 

Charlie: Not him! 

(Y/N): Ironic, his name is Angel Dust. 

Niffty runs off to look for other things to stab as Angel does a flip and lands on the ground. 

Vaggie: Okay sinners! Listen up! We've got 24 hours before the Extermination begins. Let's get to work! 

Vox continues to watch from his surveillance room. 

Vox: Oh, they suck. Oh, they suck so bad! Oh, God. They're gonna fucking die! They're- they're gonna die.

Back at the hotel... 

You noticed Cherri Bomb nearby. 

(Y/N): CHERRI?! What are you doing here? 

Cherri Bomb: Look, I  can't resist a fight, okay? Especially when I get to tag team with this fuckhead.

She gave Angel Dust a big hug, and he gave her a big, friendly smile. 

Twilight: Awww, she really is a good friend. 

(Y/N): Okay, everyone. I just want to say, it's going to be an honor fighting alongside you for the good of Hell and the Hazbin Hotel. And I think our princess, Charlie, has a few things to say. 

You give the microphone to Charlie. 

Charlie:  Yes! And we are-we are going to win! But in case we don't, I want you all to know... that getting to know you has been the biggest honor of my life. Whatever redemption really means, I know you all tried. I have seen the good in all of you. And it's... I-I'm just... I love you all, so much, and-and live tonight however you want because-

Niffty: 

https://youtu.be/53IVjG8W7IQ

Play from 0:20-0:25... 

Vaggie: Alright! Let's give it up for not dying! Love not dying. Drinks? 

Inside the hotel... 

Everyone was just chatting and sharing drinks with each other. 

Vaggie: I mean, personally, I'm excited. It's been a while since I stabbed anyone and really meant it, you know what I mean?

Sunset: Ever since we started adventuring with (Y/N), I have to say we've gotten a hell of a lot stronger. 

Twilight: We've fought the Oracion Seis, the Patch Tribe, and had our souls ripped out by Hao; this isn't exactly our first tussle with higher beings. 

(Y/N): Exactly. Yet again, you also killed one of the Homunculi. 

Twilight: Heh, that is true, with a little help from a certain alchemist. 

(Y/N): either way, here's to us! 

Cherri Bomb: CHEERS, BITCHES! 

Husk: Yeah! 

Sir Pentious: Here's to being alive today! 

Angel Dust: And not dying tomorrow! 

Alastor: Ah, the celebratory night before a courageous last stand. It's been a surprising thrill to witness these wayward souls find connection. Almost makes one sentimental, eh, Niffty?

Niffty: I really like them, Alastor. They let me put on roach puppet shows without booing!

Alastor: Oh, to understand your twisted little mind! 

Both of them share a maniacal laugh together. 

Husk: Last day of afterlife, and you're not off snorting a line off some hunk's abs?

Angel Dust: Eh, you fucked one cannibal pool boy, you fucked 'em all.

Husk: I guess you have changed.

Angel Dust: Hey, Charlie said live tonight however we wanted... so pour me a fresh one, and let's get to living!

Pentious eyed Cherri Bomb as well. 

(Y/N): WHAT ARE YOU WAITING FOR?! GO TO HER MAN! 

Sir Pentious toughened himself and slithered to her. 

Sir Pentious: Miss Bomb? Cherri?

Cherri Bomb: Yeah?

Sir Pentious: I want to tell you that I...I love... to wish you good luck in the battle ahead. 

He shakes her hand. 

Cherri Bomb: Okay then. 

Sir Pentious: You are... have always been a worthy opponent. With the most... brilliant explosive contraptions I've ever seen.

Cherri Bomb: Uh... thanks?

Sir Pentious: Anyway, I guess... please don't die tomorrow. Okay, bye!

He slithered off as Angel came up to Cherri. 

Angel Dust: You know, you could totally tap that.

Cherri Bomb: Tss, don't be gross.

Angel Dust: Cuz, you know, I hear he's got 2 dicks.

Cherri Bomb: Say what, now? 

We then see Charlie, standing outside of Angel's room. He looks at a few photos of the gang that are stuck to his door. She realizes she might not see the whole crew again. 

Vaggie: Charlie? 

Charlie: I'm sorry, I'm just scared. What if we lose? 

https://youtu.be/_Vm_j-yNRoQ

In Heaven... 

Adam lines up the Exorcists. 

Adam: Extermination Day is here, bitches. We're going to go down and exterminate demon ass!

Lute: Destroy that ass! 

Adam: Prepare to slaughter every sinner in that shit hotel, and you all remember Vaggie?

The Exorcists boo at the mention of her name. 

Exorcist: WE HAT HER! 

Lute: Rip Vaggie's cunt mouth out of her ass! 

Adam: WHOA! Lute, chill the fuck out! Shit.  Anyway, whoever brings me Vaggie's head gets... uh, I dunno, a million Heaven bucks. How about that, huh?

Exorcists: WHOOOOOOOO! 

Adam: YEAH! LADIES, LET'S FUCK SHIT UP! ATTACK! 

Lute: CHARGE! 

Adam and Lute lead their army through a portal to Hell! 

Back at the Hotel... 

(Y/N): Here they come. I sense them! 

Everyone was covered with weapons prepped and ready. 

Twilight: We've already come so far. And with the magic of our friendship, we will win! 

The whole while, Valentino, Velvette, and Vox are watching in their hideout. 

Vox: Oh, oh. Oh, this is going to be good!

(Y/N) and Charlie: LET'S FUCK THEM UP!!!! 

The Exorcists charge to the hotel as Alastor stood on the roof! 

Alastor: LET THE SLAUGHTER BEGIN! HAHAHAHAHAHAHAHAHA! 

Alastor slammed his microphone into the roof of the hotel, causing a massive force field to appear around it, trapping the attack Exorcists inside! 

Adam: WHAT THE FUCK?! 

Lute: They appear to have some kind of shield, Sir. 

Adam: (sarcastically) Oh, really? I didn't see this giant fucking shield in front of me, YOU DUMB BITCH! NO SHIT!

Tentacles burst out ripping several Exorcists in half, and gouging out their insides! 

Angel Dust: COME AND GET SOME! 

Angel Dust blasts several Exorcists with his Tommy Guns, blowing their insides to pieces, and shooting their eyes out! 

Cherri Bomb: EAT SHRAPNEL, FUCKERS! 

Cherri starts throwing her bombs, blowing up the Exorcists! 

Sir Pentious: ALL ANGELIC WEAPONS, FIRE AT WILL! 

Sir Pentious activates cannons, blasting more Exorcists down! 

Husk: HEY! Yelling while fighting, doesn't help! 

Husk throws some explosive cards, blowing up the angels attacking him! 

Niffty runs aroud stabbing all the Angels she can see, even the dead ones! 

Niffty: STAB! STAB! STAB STAB! STAB! 

Sunset: EAT SOME OF THIS! FIRE STYLE: HELLFIRE JUTSU! 

Sunset burns the ones going for her with a giant hellish fireball from her mouth, and then activates her Demon Transformation and her Oversoul! 

Sunset: IFRIT STRASH! 

She used her sword and her Spear to do an Avan Strash! 

Charlie: HA! Alastor's shield is working! 

Vaggie: Trying to focus, Babe. 

Charlie: We might actually have a chance!

Vaggie: Love the optimism. Still trying to focus.
(Y/N): Keep it up guys! 

You got out Caliburn. 

(Y/N): You ready, Caliburn? 

Caliburn: Come now, I was forged ready. 

Exorcist: Did that Sword just talk?! 

Caliburn: Fool, I'm no ordinary sword! 

(Y/N): He just doesn't know when to shut up! 

You cut the Exorcist in half and dodged another attack to bring out the Excalibur that you retrieved from the Forever Knights! 

(Y/N): HOLY TOWER CLIMB! 

You unleashed a Nittoryu technique, cutting down a bunch more! 

Some went to attack you, but- 

(Y/N): HERE GOES! 

You got out your Duel Disk and- 

(Y/N): OVERSOUL: MILLENNIUM SWORD! 

You then activated the Obelisk Armor and started unleashing devastating blows! 

Adam: OKAY! ENOUGH OF THIS! 

Adam punched the forcefield, which caused it to break! 

Angel Dust: OH FUCK! 

Twilight: The forcefield! 

An Exorcist attacked Twilight, but- 

Twilight: LIGHT OF SABER!!! 

A bunch of Exorcists surrounded her, but she unleashed her Alicorn form and her Oversoul! 

Twilight: GIGA STRASH!! 

Using her giant sword, she slashed down so many, and then went to her normal form for- 

Twilight: DARKNESS BEYOND TWILIGHT, CRIMSON BEYOND BLOOD THAT FLOWS! BURIED IN THE STREAM OF TIME IS WHERE YOUR POWER GROWS. I PLEDGE MYSELF TO CONQUER ALL THE FOES THAT STAND, BEFORE THE MIGHTY GIFT BESTOWED IN MY UNWORTHY HAND! LET THE FOOLS WHO STAND BEFORE ME BE DESTROYED BY THE POWER THAT YOU AND I POSSESS! DRAGON SLAVE!!! 

Using the Dragon Slave, she took down several more! 

As Adam approached the hotel, Alastor made his move towards him. 

https://youtu.be/7byDX2wCbiM

Pentious continues to command the cannibals from the balcony. 

Sir Pentious: Right flank, advance! Left flank, watch your six. Ladies! There are more coming up on your right. Get ready for them, Vagatha!

Vaggie: Not my name, but got it. 

Charlie is hitting the angels with her shield, Captain America-Style. 

Charlie: SORRY! SORRY! SORRY! 

Vaggie: Now's not the time for that, babe!

Charlie: Oh, right.

More Exorcists fly in! 

Charlie: DIE MOTHERFUCKERS!!! 

Charlie unleashed powerful flames, killing them! 

(Y/N): I am so in love with you right now. 

Charlie: (blushing hard) H-Huh?! 

(Y/N): Oh ... nevermnid. 

Husk flies aroudn the hotel, throwing his cards, and taking down more Exorcists! 

Husk: These fucking angels won't stop coming!

Angel Dust: HAHAHAHAHAHAHAHAHAHA! 

Husk: Yeah, I walked into that one. 

Angel Dust: Hold that thought. 

He sees some of the Egg Boiz running for their lives and charges in to save them! 

He blocks the sword of an Exorcist and shoots him in the face! 

Angel Dust: You okay, squirts? 

Egg Boi: Yeah, I think I nearly scrambled myself. 

Angel Dust: Get somewhere safe. 

Adam from above was attacking with holy light! 

Adam: SUCK MY HOLY LIGHT, FUCKERS! YEAH!

(Y/N): Is that Adam? Wait, I thought he was fighting- HOLY SHIT! HE DEFEATED ALASTOR! 

Twilight: YOU GOT TO BE KIDDING ME! Alastor was literally powerful than the Overlords! 

(Y/N): It's up to us then! 

Pentious sees Adam. 

Sir Pentious: Of course. 

https://youtu.be/eeqNdKaZaLY

Play from 0:04-end... 

(Y/N): NOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOO!!!! PENTIOUS!!! 

Pentious and the Egg Boiz were gone. Adam had wiped them all out! 

Angel Dust: Oh my fucking, God. 

Sunset: (crying) NO NO NO NO NO NO! HE WAS GOOD! ADAM! YOU MONSTER!!! 

Twilight: (crying and with an angered and hate-filled face) You're going to regret this, 

Charlie was breaking down. 

Vaggie: Charlie, I'm sorry. 

(Y/N): Now's not the time for tears. We will mourn for him later. NOW WE FIGHT! 

Suddenly, a storm began to form. 

Lute: WHAT?! 

Adam: WHAT THE FUCK IS THIS?! 

(Y/N): I hope you're ready, because I'm bringing a fucking storm!!! 

A massive hell Tornado formed! It was a giant twister made out of magma!