They Added A NEW Final Boss. It's impossible.

[@Misery_Chord_Nihil]

Split and Spoop are AMAZING devs and I am so glad you did this challenge, it is really a wonder to behold! Also, thanks for the kind words for the music! Both tracks are special to me, glad you noticed them!

[@윤지민-r8y]

noice

[@O-bearer-mine]

You made amazing bangers, love to the whole dev team

[@oyunusgg7358]

Bosses fırsat phase looks like flesh prison in ultrakill and 2nd phase look like minos prime

[@Opulentthespian]

Fun fact for the ones that dont know: The whole challange (in terms of guns) is based of ultrakill. The only one missing from the ultrakill ones is the rocket launcher.

[@J-wolf5]

The boss also looks pretty similar to how the prime sanctums work

[@holeofdarn]

They should make green Hush lesbian then, because apparently the Ultrakill fandom likes doing that for some reason

[@the_division_within_a_cake9012]

I'm so glad they made it Ultrakill based as well. It's beautiful.

[@koruton9925]

I was noticing that each gun is apart of the ultrakill roster. Cool reference Oh I even noticed the shotgun uses the horf like the core eject

[@aidynh5995]

middddd

[@Mimic_Moon]

This mod was so awesome with its ultrakill inspired everything. I especially love how green hush and phase two were somewhat similar to flesh prison and minos

[@masy9218]

Its more like Sisyphus, since theres actually enemies before the boss itself.

[@Mimic_Moon]

@@masy9218 i saw more of minos because of the slam attack and the projectile phase two shoots reflecting the serpent

[@chrisadamo1038]

Ultrakill? Is that another rougelite?

[@Mimic_Moon]

@@chrisadamo1038 not at all. Its a much faster paced movement focused doomlike

[@justARandCW]

​@@chrisadamo1038From steam page: ULTRAKILL is a fast-paced ultraviolent retro FPS combining the skill-based style scoring from character action games with unadulterated carnage inspired by the best shooters of the '90s. Rip apart your foes with varied destructive weapons and shower in their blood to regain your health.

[@Ahnock]

this is the kind of fight i wish delirium was. delirium is just an impossible rng telefrag, while this fight is the aggressive in-your-face constantly moving bullet hell delirium shouldve been. love to see new boss concepts like this that are tough but still fair.

[@Nikowo1610]

Shoutouts to the time I lost a tainted lost run from delirium due to him telefragging me twice and killing me while his healthbar was literally not even visible anymore and he would've died half a second later

[@joe____]

This definitely feels like the chaotic vibe of Delirium combined with the more modern bullet patterns of Hush and Beast

[@bigmangang]

@@Nikowo1610 Yeah tainted lost delirium is rng haven

[@sonicloverlol2]

Nah he is better

[@sonicloverlol2]

Delirium atleast doesnt do very fast attacks, and yes he can telefrag you but he is still more fair that corpse hush cuz corpse hush is in very small room making him way more hard and his attacks are even faster that deliriums

[@blockoboi5941]

P-3 looking crazy🔥🔥🔥

[@hypermat1413]

Green Isaac is one of the funniest mods ever, keep up with the good work!

[@damaton]

Closest we will see Mattman play Ultrakill

[@Makoronie]

I saw someone on twitter making a whole fledged V1 ultrakill mod

[@forg___]

13:41 omg it's me! i loved watching this stream cause ultrakill's one of my all time favorite games

[@the_division_within_a_cake9012]

Going off of the whole thing with this challenge be based on Ultrakill, I think the boss most closely resembles Sisyphus Prime in terms of the fight, excluding the last phase. The whole dashing ajd jumping attacks really remind me of him. Or perhaps Midas Prime. One of the two. Either way I love it. Good job. :)

[@inanis5888]

I'm prettybsure its Minos Prime not Midas, but that does sound like an interesting idea for a prime battle.

[@BruhnoIsNotReal]

I'm pretty sure it's meant to be like the prime sanctums with the first phase being a flesh prison of sorts and next 2 being the boss breaking out of it

[@matthewchen1673]

midas prime??? calamity reference???

[@the_division_within_a_cake9012]

@@inanis5888 Yeah I meant to put Minos Prime. Thanks for reminding me. 'Preciate it. :)

[@huhneat8908]

The skinless hush wasn't a red herring, and was genuinely just an unused texture. Edmund confirmed this on twitter at some point iirc

[@dani-ok5al]

the fact that the weapons and the special attacks are also from ultrakill just makes it better

[@jonoth1236]

the one guy in twitch chat who posted a swastika right as matt started the recording 💀

[@someonev.2]

Getting out of work and seeing that Mattman uploaded brings me joy unable to be expressed in just words

[@Luci_Spooky]

This entire thing is a ultrakill reference from the weapons to the name of the challenge The third phase of them using items sounds a lot like v2 The second phase looks kinda like malicious face

[@zachlewis9751]

Greed but Isaac managed to open Dad’s gun cabinet.

[@MapleFen]

To the fellow ultra kill enjoyers this is a mod = dream come true. Balls.

[@plaguenplay3516]

I saw a trailer of a V1 character mod, looked dope as hell

[@theconchinator2680]

0:01 What da chat doin

[@RisdenHarmon]

6:44 "AND THY JUDGEMENT IS DEATH!"

[@Guppythegreat185]

“Biblically accurate” my favourite challenge

[@addsp1233]

Now all that’s left is for matt to play ultrakill (please)

[@TheStrangestLad]

Mattman should play the game this challenge was based on, Ultrakill

[@CheesyC0ws]

I love how the third phase of the boss really felt like Hotline Miami, with the text boxes and the way he chases Green Isaac. Got to be my favorite mod on the channel now!

[@bebuwu4320]

havent watched yet but i already know this is one of the mattman videos of all time

[@blizzarddamso]

This is indeed a mattman video of all time

[@joe____]

For something I initially dismissed as a shitpost mod, this is really, _really_ good, damn.

[@knorrwax6561]

Whoever said "you should play green isaac" is the goat.

[@cinnamin4457]

Homie has them chlorophyte bullets loaded in the Nailgun

[@draxiss1577]

So . . . I'm pretty sure that loadout is an ULTRAKILL reference. If there's a point in which you start shooting coins, it's over. Edit: Okay that's literally just ULTRAKILL. No coin shooting though.

[@holeofdarn]

0:03 *are we not gonna talk about the chat here*

[@michaelperry2390]

Matman i love your vids they help me relax after sitting in college all day

[@sheriffffff]

Is nobody going to talk about the chat at 0:03? 💀

[@kritzmaker]

as soon as he showed the nailgun i was like "wait, revolver first, shotgun second, nailgun third?" and then the railgun made me realize it was ultrakill and the rest made sense

[@Kaiilotus]

the greatest isaac youtuber frfr inspired me to start playing

[@Slim-yu1ud]

When Green Baby eventually comes out with this mode he should just be called :) instead of ???

[@J-wolf5]

Call me crazy, but I’m pretty sure this is all just one big ultrakill reference

[@Makoronie]

This is true !!!

[@TheSkinHater]

This mod just makes me think “Enter the GULTRAKILL,” it really does look amazing

[@codename_popcorn9943]

bro this challenge is just ultrakill

[@nathanharley97]

I love that everytime I go on my KZbin there’s a new Mattman video keep up the good work

[@lemonmilk4680]

Mattman video on my feed as soon as I wake up

[@my_name_is_J_777]

you know its a good lazy mattman video if theres a swastika on screen 3 seconds in

[@iaminyourwalls3889]

0:02 chat looking real sus bro.

[@vexy-pu2889]

the tear effects remind me of ultrakill weapons with the revolver that fires a high damage shot a shogun that shoots an explosive and a nail gun with homing nails and a rail gun that takes for ever to charge

[@totally_not_a_possumlmao254]

God, his 3rd and 4th phases look like Ao Oni. The entire boss gives off “Just One Boss” vibes.

[@eddible544]

12:13 yo holy shit, mattman got dah eddible keyboard

[@lucatdcat8720]

To quote a very grumpy game player: "BLUE HUSH! RED HUSH! GREEN HUSH! AAAAAAAAAGH!"

[@cheeseymoon2848]

The Ultrakill reference goes crazy

[@carlomarin153]

since you mentioned liking new concept for final bosses the isaac reverie mods adds one of those too

[@SecondCitySavior6969]

You know what else is impossible? Not getting hyped for new Mattman video

[@dragonlord9957]

“Wait for 20 seconds bro im gonna respawn” The situation im in: 11:10

[@TripPy_Poly]

First weapon is revolver Me : uh huh Second weapon is shot gun Me : ok Third weapon is nailgun Me : hold on, the weapon list are familiar Fourth weapon is railgun Me : this is ultrakill definitely ultrakill Mattman healsby killing enemies nearby : YEP THIS IS ULTRAKILL

[@gprulle9871]

the switching between phase 1 and 2 and just phase to in general really reminded me of supreme calamitas from the calamity mod in terraria

[@WhateverWatcher]

Oh I remember this challenge, you streamed it live on Twitch!

[@panananasek6120]

0:03 THE CHAT💀

[@lawful_]

The new Touhou game looks sick

[@rohanehrig1379]

BALLS ver. 5

[@theadrenalin2016]

The boss fight looks like a Terraria Calamity mod boss fight with the way it's so chaotic

[@Roro-om2fl]

This Challenge is a certified ultrakill reference

[@timebender25]

We dead-ass did not know you could charge the Shotgun and Revolver. We beat this challenge using only the Railgun and it took a while

[@cristianserrano6582]

God, this was peak mattman

[@Versussy]

The chat wilding at 0:02 bruh 💀💀

[@didicasimel1591]

Basically ULTRAKILL

[@rodneybuckentime4838]

this challenge is literally just ULTRAKILL in isaac lmao the revolver is the PIERCER. Fast, decent damage. Charge up to shoot a piercing shot that deals 3x the damage of a revolver shot. the shotgun is the CORE EJECT shotgun. charge it to eject the core, which explodes on impact. the NAILGUN seems most akin to the ATTRAPTOR nailgun, which launches magnets and then nails, which are attracted to said magnets. the railgun is the ELECTRIC RAILCANNON, which has a 60 second charge-up and deals devastating damage. oh, it also pierces infinitely.

[@edgekahn9618]

Hearing Mattman scream in terror is so hilarious 😭😭

[@nij5517]

Matt plsss double upload!!! someday!! plsss!!!! i love your videos and I cant get enough of them, I literally rewatch atleast 5 videos per day.

[@BladeOfDespairr]

Mattman never fails to fill us to the brim with happiness everytime he uploads

[@capacoocoo1511]

Hes filling us up to the brimstone??

[@d.sadster5684]

lmao brim

[@WeakestYasuoPlayer]

BRIMSTONE REFERENCE IN THE ENGLISH LANGUAGE!?!?!!

[@namelessshadow7748]

OMG BRIM = BRIMSTONE THE BINDING OF ISAAC 100% REFERENCE CONFIRMED?? NO WAAAAY 💯🚫🚫⛔⚠️

[@multiversalkarma4868]

The problem you ran into with moving left and holding w is why I rebound w to left shift. I think it works much better most of the time so you might want to try it.

[@tsfthe]

Fun fact: this is literally Ultrakill The guns are taken directly from Ultrakill, and the boss itself heavily reminds me of Sisyphus PRIME

[@killerzboyhd1235]

MATTMAN IS THE GOAT NEVER MISS AN UPLOADDD (sometime he miss but thats okay)

[@nathanitet]

This was a great video you did so well and I’m now inspired to download this mod lmao

[@dancingenginier5707]

it feels like this challange was realy inspired with ultrakill with how each weapon works on paper

[@riverscuomo7140]

I can't help but feel like Guns n' Roses is some reference to/tribute to the Rebekah mod, especially considering how it switches between different styles of ammo.

[@mysteroni2651]

Was here for the stream, goated mod, goated mattman

[@chichigughi]

if ultrakill was in isaac this is what it would be (edit i didnt see the other comment lol but he didnt say that the boss is kinda like sisyphus or minos prime and the first phase panopticon or flesh prison)

[@xerlisbraunzera2376]

"You need to rankup your fuc**ng style points Matt you switching weapons time to time" archangel gabriel

[@skydoesstuff4014]

wait, biblically accurate... dear god its a ultrakill reference-

[@prodLUDO]

9:04 thats a hotline miami reference

[@Alberto-ri1tk]

By looking at the Boss, i think that not only the weapon is an ultrakill reference. The boss seems to be a flesh prison/Minos prime reference too

[@RoxorPlox]

Its fun to see Matt degraded to a mortal in Isaac XD

[@player1angel567]

Oh my god, I saw Skinless Hush in the thumbnail and I got VERY worried you were playing *that* mod So, for the people wandering about the mod I'm talking, it's Abortionbirth (yes that's the name) Basically is a mod whose only goal is to make the player miserable by adding tons of items that actively harm you, adding brimstones to everything and more stuff.

[@kristinhorner4628]

Agreed.

[@cheeks3367]

what mod?

[@ZaChemas]

What mod, say it, say it

[@VoidyButterfly]

This boss feels like realm of the mad God big time

[@drexatoy]

Ultrakill weapons moment

[@TheKhan163]

I wke up and don’t even open my eyes first, I open the first video in recommended just because I know it’s Mattman’s new tboi run

[@hanabihyuga8265]

the guns are from ultrakill such a nice detail that they even have their properties

[@mechanicalpilot52]

Bro's playing doom with the switching

[@Vidov24]

The final boss reminds me of terraria bosses. You should play terraria with calamity or fargo's souls mod.

[@bazzy5489]

The second last and last phase of tbe boss just reminds of the goofy Ao Oni monsters

[@ItsJustAust1n]

Literally Issac Ultrakill

[@federicoislab]

They really added the equivalent of an endgame Calamity boss to Isaac

[@marcel0367]

this is inspired by ultrakill i think, you get healed by every kill near your, the revolver with its charge being a railgun shot just like the game, the shotgun trowing a bomb, the nailgun with homing like if the enemy has a nail in him and the railgun that takes a vigillion years to reload, the only that it missed was the sawgun or whatever is named, also the rooms are also like the game, cool mod

[@meatgrinderisinfinite]

they fucking added v1 to isaac i love this so much

[@thefancydavd5508]

Nice video. I'd say it was 26% better than an average video.

[@401craft6]

7:10 DANCE

[@GalaxyGuyMan]

Mattman loves doing revolver [BIG SHOT]s

[@tehcodekid8421]

My favorite Isaac boss - Green prime

[@Stolen_skeleton_tf2]

I like how isaac moders, while adding a challenge Juft bloody overdo and make better thing than sometimes most of mods (Also, for this challenge, i would add how to jump active or something like dash, like in an Ultrakill)

[@S0upT1m3]

This makes me want Matt to play ultrakill

[@el3ctrogamer834]

Mattman, you need to play ultrakill, you would love that game

[@tealeo2202]

Thank you matt for the video i can finally rest after hours of stress ❤

[@Salocin_1]

The custom rooms are crazy

[@TheSillyMichael]

this character now is dante from devil may cry