Ryver's body was unceremoniously tossed backwards like a sandbag and as his body was about to slam against the wall behind him, he forcefully twisted his midsection, shifting the pressure to his legs as his limbs landed on the wall, making him appear in parallel angle to the floor surface.
Compressing the force in his body to the wall, Ryver's knees bent against the wall and he seem to have been stuck to the wall like a nail, as though his legs contained adhesives, making him linger vertical to the wall. His hands trembled slightly and he could feel his internal organs had received a great jolt. Even the injuries he believed had healed were exhibiting signs of appearing, noticing that his ribs were hurting after the attack. He wasn't fully healed yet and now he was fighting, making his prior injuries worse.
The assault from the beast was very tough, but Ryver noticed it was still a bit weaker than the Sabre-tooth Tiger seeing as he was able to receive the attack without his bones breaking.
But the power of the Mutated Human didn't seem to rely on its strength, but its tremendous speed!
Ryver's heel blasted heavily against the wall and his body swirled twice in mid-air and then one of his legs suddenly stretched out.
BANG!
The chains holding the second stairway door rattled loudly, severing into two as a massive force chopped into it like a knife.
The door directly opened and the frightened man who was curled up against it, with his body shivering from intense fear, his body involuntarily went into the stairs, rolling through the stairways like a barrel tossed against the stairs. The man screamed his guts out like a little girl, almost as loud as the Mutated Human creature shriek.
River's face turned unpleasant and a thought struck him, but he placed it to the back of his head as his body finally dropped to the ground.
SCREEEEEEEEEE!
Even with the irrational mutation of the cancerous cells within its body, it still retained a bit of intelligence and could surmise what Ryver was about to accomplish. Since the door was now opened, it was obvious Ryver would head into the stairway opening, and lock himself in it.
The Mutant's dried up face opened up as it screeched loudly, its arms which had somehow transformed into leathered wings flapped once and a massive gust of wind erupted behind it as its body shot forwards like a bullet.
And much like an apparition, Ryver could sense the Mutant getting close to him. In that second, Ryver performed something unexpected, his body moved towards the door, but he suddenly slammed his leg again the wall, the force jolted along his body as he manoeuvred towards the opposite direction, evading the Mutant's lunge by just an inch.
Using his other leg, he bounced off the other wall as he leapt into the air with the leverage. Now he was above the Mutant. Time seemed to slow down as the beady eye of the Mutant rolled upwards to look at Ryver.
Its momentum was too fast, therefore it was unable to change directions so suddenly and in such a narrow space at that. The Mutant flapped its wings rapidly as its thin body slowed down but still, it wasn't adequate.
Ryver heaved his combat blade as he held it straight, his body plummeted onto the back of the mutant as his blade headed for the neck, a very clean stab to the skull and it would all be over.
But just as his blade was just two inches away from the Mutant's bald head, Ryver's expression changed slightly.
The Mutant's eyes glinted and with astonishing dexterity, its wings bend sideways like that of a plane permitting it's body to spin around in mid-air with the assistance of the wind and it was unexpectedly facing towards Ryver.
A bloodthirsty intent filled Its mind as its talons swooshed in the air, snatching towards Ryver with its claws. Ryver who was still in mid-air had no leverage that could assist him to move in the air, rendering him quite helpless.
CLANG!
He hastily crossed his blades and an enormous force smashed into him. The kinetic force immediately pushed him upwards violently as he unceremoniously crashed into the concrete ceiling.
The concrete shook violently but Ryver pushed his arm against the roof and as he fell, his body rolled sideways while airborne, letting the large but thin claw narrowly pass his waist, avoiding being pierced. But Ryver appears to have disregarded that he was still airborne and even if he was ten times as fast as an average human, the Mutant was created for the wind itself.
A skinny claw slashed at his exposed back while he was just half a meter away from the ground. His intuition flickered and Ryver eyes widened slightly. In that split second, he willed his body.
His cells received an abrupt jolt and they began to transform, his back muscles rapidly gathered as they solidified significantly, and his skin also fortified as it seem as though they had altered into pure metal.
BAM!
Ryver was tossed sideways, thrusting through the stairways as his forebody smashed against the wall of the stairs. Ignoring the searing pain flowing through every part of his back, Ryver kicked out backwards, reaching towards the door, attempting to close it.
But the Mutant seem to have deduced Ryver's intentions, and it was closer to the door than Ryver was added with its speed, it was sure to breach through the door before Ryver could lock it.
Ryver eyes flashed as he also came to this conclusion. He immediately willed his body and a great jolt of lightning seem to flash through his entire body as his cells rapidly slammed against each other, making his body and muscles hyperactive. He was about to activate [Flash], when the metallic door suddenly sealed shut and then with a click, it locked.
Ryver paused in his track as he glanced at the person that had accomplished it, it was the man he had saved earlier. He was bleeding slightly on his forehead as he panted heavily against the metallic door. He wasn't wearing the improvised gas mask, allowing radiation to enter through his nose.