The battle is still taking place in a space with a giant galaxy size Kritanta and an amp Flame in his Super Blue state, which he instantly transform into his Mastered Super Blue form to top it off. 

Kritanta: Pathetic rat, even at the state you're in, you won't have enough power to completely destroy, well as long as you can manipulated or destroy the concept of death, which is ME! I doubt you can completely destroy me.

Flame: I'll show you how much I have grown up for many years! No matter what possible outcome you see for my death or my defeat, I won't let that happen. 

Kritanta could only laugh when he hears that, although he does admit that no matter what he thinks or predict many outcomes for his defeat, it won't be possible for him to know the exact period where he wins. Flame smirk when he hears Kritanta laugh. The red hedgehog charges towards the embodiment of death at full speed, going into different timelines to the past and the future, Flame was fighting at his full strength against Kritanta. 

Whenever both Flame and Kritanta landed a punch clash to clash, they created a shockwave that spread around all existing timelines/worlds, even the past, present, and the future in just a second. Flame remember this happening when he first fought the Strong man in space at his world, he is proud that his strength has increased in a infinite amount. 

With their speed that travel through every timelines past and future, they now end up in a present timeline for their minute long clash. Flame kicks Kritanta into another dimension, afterwards, Flame and Kritanta  are clashing at super-fast speeds across every timelines past and present, insanely. Then Kritanta slams Flame into another dimension at a unknown planet, creating a large crater to it that is as large as the largest country. Flame then went Kaio-ken times five hundred on top of his Mastered Super Blue form, Kritanta is surprise by seeing what Flame has kept under his sleeve.  

The red hedgehog punches Kritanta to the face, who then delivers a flurry of kicks and punches. He knows that time freezing will not work on him, but he has plenty of techniques that he hasn't used yet. When the embodiment of death was knocked away, Flame fire a powerful dark red beam that can destroyed souls, but has no effect against Kritanta. He then grab him by the head, he spins at insane speed and throws him to another star, which suddenly transform into a sun size being after consuming it.

Kritanta: This is something I haven't had for millions to billions of years! I sure hope I will never forget this memory!

Flame smirked, but suddenly, his quills detected something is going happen at any moment, Kritanta created a black void that transcends time and space, the red hedgehog was right. He looked around, seeing that he was on a snake platform, with floating red glowing cubes in that void, Flame feels that this was some kind of game. The embodiment of death was hovering to where Flame is, the red hedgehog charges towards Kritanta, stretches his arms again, this time, grew his left and right hand to being 18 feet tall and start clawing at him, but Flame phases through that attack and punches him in the face. 

The embodiment of death was knocked back from that punch, the red hedgehog uses his martial art skill to fight against him. Kritanta knows that Flame is an expert martial art, quite surprised that he admit Flame is more skilled then his older brother, he has fought him before in the past and knows the kind of fighter he is. Kritanta holds Flame's punches as they come eye to eye.

Kritanta: Your not bad, I am impressive by your skill.

Flame: Heh, you know about my martial art skill huh? Nice.

The red hedgehog powers up heavily, he was still using Change the Way as his blue thin aura still surrounds him. Flame is not giving up that easily, powering up to his Mastered Super Blue form. Knocking away the embodiment of death, Flame charges towards him and fights him, everything Kritanta is doing is not working on Flame. Flame was doing massive damage to him, but he is able to fight back with a few hits, the embodiment of death backs away. His left hand starts glowing dark red, it was a instant kill move that can instantly kill someone with just one slash, as the red hedgehog was charging towards him and as Kritanta claw him with that instant kill movie, Flame is able to hold on to his hand clawing and shoot his heat vision towards him to the chest, knocking him back. 

Kritanta wasn't finished yet, he firebreath at Flame that is mixed with black and red. He is trying to burn Flame's mind, and soul, the red hedgehog is able to resist and tank his firebreath, he using his heat vision at full power to push back Kritanta's firebreath, it was overpowering his firebreath and it hits Kritanta again. Flame powers up again and pushes him through sheer speed, sending him to another dimension, the red hedgehog uses Kritanta as a punching bag with his rapid punches he's unleashing. With 8,000 punches Kritanta is tanking, he managed to phase through one punch from Flame and grabbed his wrist. 

The embodiment of death swings him at insane speed that launch him back to the Jurassic period to one of the mountains, only for the hedgehog to leave a grin on his face. Flame shot forward, use his speed to get back to the present timeline and head-butt Kritanta, knocking him away at such force. The embodiment of death stops himself from being send away, he started laughing, as Flame attempted to punch him, he easily phase through it, avoiding the punch and strikes him with a index finger on his chest. Flame can tell Kritanta was trying to pressure point him, he can feel the hit but has no effect on him, they both charge towards to each other, Flame is going use his Point-Break on him in revenge. They dash their index finger at each other, only to end in a draw. At unbelieveable speed, neither one hitting each other until they gave an even more powerful thrust which is strong enough to send them both backwards. 

Kritanta then gets ready to release his firebreath, Flame's quills sense he is about to unleashed his firebreath, he quickly use his heat vision at full power as his firebreath was release and the two collided. The heat vision and the firebreath was a little even, with Flame getting the upper hand in this fight, the heat vision still push back Kritanta's firebreath. The firebreath was overpowered by the heat vision and it hits on Kritanta, again. In anger, the embodiment of death stretches his arm to grab the red hedgehog and yeeted him into another dimension that is outside of time and space, Kritanta would expect Flame to get out of it within the next second. He hates to admit it when facing Flame, in a blink of a eye, he can see Flame was standing from ten meters away, he was right. And to top it all off, he wasn't in his Change the Way state anymore knowing he's now confident to take on the embodiment of death. 

Kritanta: You know, you put up one hell of a fight against me. Even without your father's secret technique; Change the way, the result would stay the same as this timeline. During this, I have foresee every infinite possibilities, no matter which one of the possibilities there is, it seems that you are bypassing that inevitable that was destined to happen. 

The red hedgehog rubbed his nose, a cocky smile joined on his face. 

Kritanta: I will admit this, not even I can't kill you despite while we were fighting, I caused all life on each planets to end. It's extraordinary what your father had created. 

Flame was impressived what he's saying, he was right when he can't kill him. 

Kritanta: A being who can resist death and fight me should not be taken as a joke or a note to a person being overpowered in the story, no no no, so much more then that. Now... enough talking, time to dance!

When the two clashed at full speed, they once again created a shockwave that spread throughout the infinite multiverses in a matter of seconds. This battle took within three minutes, Flame, who is still in his Mastered Super Blue form, overwhelming him to the point where he pierces through Kritanta just by his speed, sending the embodiment of death reeling. The red hedgehog files up behind Kritanta, who is begins to fall down on his back, then he uses his speed to push him and went outside of all the multiverse. Something that is called; The Living World. Flame then traps Kritanta into a wall, only for him to watch the embodiment of death falls back into the Living World. He soon disappear inside that wall, the red hedgehog sighs. Flame officially gave Kritanta as the strongest foe he has face, so far. He placed Kritanta inside that wall, letting him rest until he returns back, not killed but being laid to rest inside the Living World. It's origin is unknown, not even OGN knows about the existance about the Living World. However, the red hedgehog knows only little origins about the Living World.

Flame: May you rest, Kritanta..