The procedure required for his evolution compels him to assemble certain types of materials, some of which is plain impossible for him to acquire with his current strength.
Now, he is unknowing about how he would be able to use those materials to increase his bodily limit. Obviously, the system would instruct him on how to use those materials to stimulate his body. And maybe from that juncture, he would have an inkling about how to use the materials for other intentions.
Furthermore, the requirement for his evolution is different and also 10 times harder than others. Ryver chose to evolve in all three aspects while many would definitely choose the easier path, evolving in just one aspect such as strength, agility or physique, Ryver decided on the most difficult path, meaning it would be dangerous and even harder to fulfil but if he was successful, he was confident it was all going to be worth it.
Moreover, he had attained three abilities from choosing to evolve with his three attributes.
Ryver was now able to walk suitably. With the force his legs had been hit by, it was almost inevitable his bones would have been shattered into fragments. But he had managed to grasp the danger in the last moment and had activated [Immunity] in the last second, which had protected him for a bit but even then, his nerves, veins and spinal cord had been affected, keeping him immobile for a while until his insane healing kicked in.
If that wasn't the case, then things would have been different now. Even with the night of the sky, and the radiation in the atmosphere, the emergency battery lamps installed at the wall of the stairway were on, but several of the lamps had shattered probably from the battles that had occurred.
Only a few glares were left to illuminate the stairway. Even then, it was enough to illuminate a few parts of the stairs, albeit barely.
Ryver raked his fingers through his hair and rolled his shoulders, massaging the back of his neck, a few cracks sounded as his bones popped.
Heaving the corpse of the Mutant on his shoulder, Ryver proceeded to climb back up the stairs. To extract the cerebrospinal fluid, he needed a syringe for the procedure. And back in the room he had chosen, he had seen a couple of empty syringes within the first-aid box, which was what he intend to utilize.
His steps seem sluggish as they ascended up the stairs. Even then, he was still faster than an average human in clambering those stairs. After what appeared to be forever, Ryver reached a familiar floor with half its door blasted into splinters. A quarter of the metal door was still intact though. Ryver shifted it off its hinges and as he came into the hallway, several corpses of Mutated Giant Pigeons laid motionlessly on the ground, crimson blood bleeding rapidly into the floor, forming blood pools in a few caved in parts of the ground.
There was a splash as a foot stepped into one of the blood potholes. Ryver headed directly for his room since there were no evidence of a living mutated beast on this floor any longer.
They had possibly been scared off by the powerful Type 1 Mutant , which was why there weren't any of those flying beasts on this floor. His room seems no longer inhabitable with corpses, blood and organs spawn and at every corner of his room, wafting out horrendous odour to the environment.
The furniture in his room had all been razed by his battle with the beasts and even the couches had multiple claw marks on them.
Ryver stabbed his knife into the skull of a Mutated Gaint Pigeon and rummaged through it, but he was unable to find a nuclei within its skull.
"Huh." Ryver pursed his lips as he was deep in thought. Nucleus are probably developed by Type 1 monsters or beings that had gone through the evolution process and had grown, not just ones that possess strength a few levels above normal.
He found the first-aid box on the ground, a few of its content broken, some bandages drenched in black blood but luckily, he found two intact syringes he could use. They were still within their plastic container. Therefore, there was a high chance it hadn't been contaminated yet.
Dropping the Mutant's body to the ground, he laid the corpse on the ground with its belly facing the floor, exposing its back. He then extended its wings even further and clipped them to the ground with the leg of a broken table and the sofa, getting easier assess to the spinal cord.
There were little spikes at the back of the Mutant which appears to have grown from its spinal cord, extending from its neck all the way to its tail.
"Procedure for cerebrospinal fluid extraction."
His Bionic smart lens flashed and a few words appeared along his line of sight including all the procedures needed to extract the fluid. Ryver turned the corpse to the side, chin tucked to the chest and knees pulled up to the chest.
When the back is in a curved position, he stabbed his knife into the back, piercing the thick fleshy skin of the Mutant before jabbing the needle between the bones of the spine (vertebrae) below the level of the spinal cord.
The plunger of the 150ml size syringe was then pulled and a yellowish fluid from the spinal canal was then slowly sucked into the container, which was immediately filled.
Ryver was pleasantly surprised. He expected to have found a little bit of the liquid with how thin and skinny the Mutant was but the 150ml container had been filled and there seem to be more of the liquid within the body.
Ryver squirted the liquid in a clean flask and then repeated the process. This time, the container was filled almost halfway before it stopped and placed it within the flask, locking it tightly. This didn't make Ryver disappointed though. Calculating the amount he had extracted, he had acquired a bit more than 200ml of the liquid, meaning he only needed one more Mutant before one of the requirements would be completed.