Starting off with Gamedues in his final form destroying buildings after buildings as it was hectic and what's even worse was that people started becoming bugster infecting other people which most people were ecvacuating for their lives

Gamedues: "Every living being will all die in this hell game!" Then Chronos reverted to his smaller form

Ray: "There's so many is there even a possibility to save everyone?!" Then they were all abushed by multiple bugsters

Kadoya: "WHAT THE HELL?!" He strikes the bugster down but dodge the human bugsters

Katsujuro: "THIS IS GETTING OUT OF HAND!!!!" He then started to fight with his fist rather then using the cannons around him because if he managed to kill someone then well...he would kill someone as this kept going on Gamedues charge toward Ray and then as they see Ryan but nobody bother to go after him because they were surrounded by too many bugsters as Katsujuro full on take on Kaiden and Motor

Meanwhile

Ryan started to run but was stopped by someone

???: "Well well if it isn't Genm."

Ryan: "Wha-" He looks behind him to see it was Gamedues

Gamedues: "Time to end you...you brought me into this life and i'll eliminate your lives." Then he attack Ryan

Meanwhile

Ray: "Oh god this is gonna be a he-" Then he runs as he knows that this isn't the time to go on the attack for now and the others saw him run and so they followed because they also can't fight this many without killing a life

Later

They managed to find a place to hideout which was back at the basilicom

Ray: "Holy cow there is...so much."

Katsujuro: "First thing done right find a place to hide."

Kadoya: "Yeah...this is like something we've never done before."

Neptune: "OKAY WHAT'S GO...ing on?"

Ray: "Zombie apocalypse...humans turning into bugsters." Then suddenly Noire arrived at the Basilicom with Nico

Noire: "THANK YOU FOR SAVING US!!!" She said sarcastically

Katsujuro: "Look enough of the sarcasm what we need to do is kill Gamedues and the game could be possibly over."

Ryan: He appear from the purple pipe "Sorry but unfortunately even if we do chances are we have to deal with my brother."

Iris Heart: "So in lame mens term we're all screwed unless we don't just kill a bit of people." Everybody gasped

Ray: "Wait hold up how many lives do you have?"

Lives remaining: 2

Everybody gasp seeing he has two lives

Ray: "Great job idiot you lost that many lives?!"

Ryan: "Shut  u-"

Neptune: "Guys!!! We should stop arguing and come up with a plan."

Everybody else: "Wait she's gonna come up with a plan?"

Ray: "No offense but I think that it won't work with whatever you think because we have the Doctor Might-" Then he noticed that from his pocket it was gone "WAIT IT'S GONE-" Then he finds a note

Ray,

We'll be needing this gashat

With respect,

The Bugsters Poppy, Parado, and Fujikawa

Ray: "Oh god..."

Meanwhile

Fujikawa meets up with Parado and Poppy at the rooftop of the hospital as he have the Doctor Mighty XX gashat

Fujikawa: "Okay guys I have what you told me to bring so why am I here?"

Parado: "I should ask the same question."

Poppy: "Guys there's one way we can save everyone this gashat is a vaccine for the Gamedues virus."

Parado: "Wait what are you tal-" Then suddenly she takes the gashat and inserts it onto herself 

Parado and Fuijkawa: "WHAT THE HECK?!" Then she started fading away

Poppy: "This will be the last thing to help humanity..." She smile "Tell everyone about these messages to the following, Ray: Please , Kadoya: Please stop eating too much sweets and don't rage too often, Katsujuro: Could you please start expressing more emotion and don't try to act like you are some lone wolf, Yamashita: Stop lying and get used with Ryan, Ryan: Keep the god complex down and continue making game for people to enjoy, Noire: Don't act like a tsundere and started opening up with your lover more often. As for the two of you we may be bugsters but I enjoy the last of us hanging around..." She then faded into pixels and then clouds shows up and started raining which resulted in everyone infected with the virus cured but it resulted in sacrificing someone but Fujikawa has a bit of pixels captured and absorbed as Fujikawa teleported to the basilicom

Ray: "Huh? Fujikawa what are-" He sees the sadness in his face

Fujikawa: "Poppy..." Ray was confused and told everything about what happened and to tell them what she wanted to say to them to which they were depressed because of how she sacrificed herself for others to live resulting in them just standing there quiet not a single word had been said but on the other hand people were turning human once again which they didn't mind but Ray had enough

Ray: "Ryan what happened when fighting your brothe-"

Ryan: "Don't even say that I have no brother he's dead to me."

Flashback

Ryan found Gamedues already possessing Alex but for some reason he let Alex take control in which the two started fighting

Ryan: "I will end this now BROHTER!!!"

Alex: "Pfft I have no brother."

Ryan: "Tch you know what i'll never forgive for messing with god-"

Alex: "SHUT UP ABOUT YOUR GOD CRAP!!!" He then stabs Ryan which he dies

Game over!

Ryan then respawned again already shocked

Alex: "You are just nothing more then a failure a of a Mercer you have failed the company that was once build on but now have fallen from your own hand blinded by your god complex there's a difference between the two of us, not in strength but by our sanity and your sanity has become a virus that can't be contained..." Then he killed him again and again and again

Game over!

Game over!

Game over!

Game over!

Game over!

Game over!

Game over!

Then when he was respawned he fled and teleported away

Gamedues: Took possession back "Well I guess humanity has a weird way to show how they feel about family members."

End of flashback

Ryan: "As a god let's end him. And that includes Alex." Ray nodded because this was probably the good thing to do but not because they need him

Later

Gamedues was standing there alone no bugster, no human turned to bugster but alone surrounded by rubble and destroyed building but suddenly that was when he sees the Kamen Riders so he then turned into his monstrous form

Ray: "Gamedues! Alex! We will end this once and for all."

Gamedues: "Heh you think that all of you can take me out?"

Yamashita: He appeared out of nowhere "Don't underestimate us just because we are young but we have experience from multiple fights and from many people helping us along the way you have nothing to say that we haven't done. We fought, we died, we survived, but the one thing is that we won't back down because no matter how many times you push us down we'll always get back up until this fight is over!!!" They all take out their drivers and their gashats

Maximum Mighty X!

Hyper Muteki!

Taddle Legacy!

Bang Bang Simulation!

Mighty Action X!

Dangerous Zombie!

Bakusou Bike!

Jet Combat!

Ray, Kadoya, Katsujuro, Yamashita, and Ryan: "Henshin!" They insert their gashats onto their driver and open the lever

Maximum gashat! Gachan level max! Bakkān! Mu~te~ki~! Kagayake~! Ryuusei no Gotoku~! Ougon no Saikyou Ga~mer~! Hyper Muteki Ex-Ai~d!

Gashat! Gachan! Level up! Tadoru Rekishi! Mezameru Kishi! Taddle Leg~acy!

Gashat! Gachan! Level up! Bakusou Dokusou Gekisou Bousou Bakusou Bike! A gacha! Buttobi! Jet! To the Sky! Fly! High! Sky! Jet Comba~t!

Dual gashat! Gachan! Dual up! Scramble da! Shutsugeki Hasshin! Bang Bang Simulatio~ns! Hasshin!

Gashat! Gachan! Level up! Mighty jump! Might kick! Migh~ty Actio~n X! A gacha! Danger! Danger! Death the Crisis! Dangerous Zombie! (Zombie Screech)

Then they all charge toward Gamedues which they all attack with everything they have but nothing worked as Gamedues started attacking them which they were all crashed into buildings but they all got up as then Parado and Fujikawa both already transformed and were using their weapons to block the attacks of Gamedues

Fujikawa: "RAY YOU MUST THINK THERE IS A WAY TO STOP GAMEDUES AND END HIM YOU JUST NEED TO THINK OF SOMETHING SIMILAR RELATED TO THIS!!!"

Ray: "Simil-" He gasp "Of course!!!" The others were attacking "EVERYONE STOP ATTACKING!!!" They did but were confused "Think about it guys Gamedues has possessed Alex and if i'm not dumb Kadoya you told me something about this, WE MUST GO BACK TO THE FIRST LEVEL IN ORDER TO SEPARATE HIM FROM GAMEDUES WITH IT WE CAN ELIMINATE GAMEDUES ONCE AND FOR ALL!!!"

Everybody else (Except for Parado and Fujikawa): "YOU'RE RIGHT RAY!!!" They all smiled because of this and so everyone removed their strongest form of their gashat and take out their first level gashat

Mighty Action X!

Taddle Quest!

Bang Bang Shooting!

Bakusou Bike!

Mighty Action X!

They then close their lever and insert their gashat onto their driver

Gashat! Let's Game! Metcha Game! Mutcha Game! What's your name?! I'm a Kamen Rider! 

Everyone except for Parado and Fujikawa were all in their chibi level 1 form and so they all went to attack Gamedues which was effective because of what Ray said Gamedues is a bugster possessing Alex so meaning they have the upper advantage

Ray: "We will end this!!!" Then they dodge lasers from Gamedues as they all take the gashat from their driver and insert it onto their kimewaza slot and press the button

Gashat! Kimewaza!

They all leap into the air and go for a rider kick on Gamedues

Mighty Taddle Bang Bang Bakusou critical strike!

They all landed their rider kick against Gamedues which resulted Gamedues and Alex separated and Parado's armor disappear as he takes the Doctor Mighty XX gashat and insert it onto his driver

Parado: "Everyone i'm sorry but i'll sacrifice myself for others!"

Everybody else: "HUH?!" Then this resulted in Parado and Gamedues fading away

Fujikawa: "PARADO!!!" Then he run towards him

Parado: "Fujikawa thank you...my debt is paid off from you...i'm sorry that we can't play anymore game but...if we do let's hope that Poppy and Graphite are with us in the afterlife..." Then he vanished but not before a bit of pixel appearing in his hand and vanish

Fujikawa: "No..." He cries "DAM IT WHY THEM WHY COULDN'T IT HAVE BEEN ME?!?! I SHOULD HAVE STOPPED THE GAME BEFORE IT WAS RELEASED, IF I DID THEN NONE OF THIS COULD'VE HAPPEN...none of this should have happened..." He was on the ground in defeat knowing that two bugsters he cared died and all he got was some speck of pixels

Alex: He laughs "Kamen Riders...you think that just because you ended the boss? Heh you forgotten..." He takes out his gashat "I AM STILL ALIVE SO YOUR LAST BOSS IS ME!!! NOW TIME FOR YOUR JUDGEMENT!!!" Then he gives a half way thumb and then a thumb down "Death. Your ending will be a bad ending!!!"

The final level on Game Start!

Alex: "Kamen Rider Chronicle will never have an ending!"

Kadoya: "Being doctors mean to carry the burden of others..."

Kadoya: "THIS IS THE MEANING OF A DOCTOR!!!"

Katsujuro: "As long as I live I promise THAT NOBODY WILL DIE IN MY HANDS OR OURS!!!"

Yamashita: "Dying is something we suffer but in the end we will protect others who are still living."

Ray: "Alex you see what we can do as Kamen Riders and doctors? We have given the power to help others."

Ray: "We will change our patients fate with our own hands!!!"

Ray: "Those who died, we will do our best to bring back those who are in these gashats."

Fujikawa: "I will keep on living for my comrade's faith."