Gunshots echoed non-stop in the narrow corridor.

  Tian Shuai, Raymond and Hank.

  The three mercenaries opened fire simultaneously, forming a dense firepower blockade line.

  The Bio-Hazard Ghosts defense is several times stronger than a zombies.

  Bullets that can easily tear through a human body are no different from scratching an itch in its presence.

  Therefore, Tianxia and others completely ignored the consumption of ammunition, using the kinetic energy of three firearms, AK47, M16, and M249, to restrain the movement of the biochemical ghost, slowing it down.

  Even so, Tian Xiaos situation is still precarious.

  Biochemical ghost suddenly roared, his muscles tense all over, and he bounced off all the bullets. He then exerted force with both legs, dashing towards Tiān Shā like lightning.

  Under the blessing of the system, Tiān Shās marksmanship was outstanding, almost every shot hitting the head of the biochemical ghost, making it quite wary.

  Thus, under the drive of biochemical viruses in the body, biochemical ghosts rush straight towards Tianxia.

  The steel blade on his arm shone with a cold light, and the force that burst out seemed to be able to split even steel plates directly.

  Tian Sha only felt his hair stand on end and hastily raised his AK47, hoping to use the gun body to block the biochemical ghosts attack this time.

  The steel blade chopped down on the gun body.

  A burst of clashing metal sounds suddenly rang out.

  On Biohazards arm, a faint blue glow seeped out from the muscles and tendons.

  Alloy-forged steel blade deeply embedded in AK-47s metal-cast gun body.

  A heavy force was transmitted to the arm.

  Tian Shuo knew about the difference between himself and the Biochemical Ghost in terms of physical quality.

  He decisively abandoned the scrapped AK47, quickly retreated and dodged the biochemical ghosts next attack, while thinking of a way to break through.

  Captain Ramon and Hank have also arrived.

  Wielding M16 and M249, a fierce firepower burst out again, forcing the biochemical ghosts to temporarily retreat.

  One wave subsides, another rises.

  The explosion of the hand grenade and the battle at this moment produced a huge noise, attracting all the zombies in the nearby area.

  But the appearance of these zombies completely blocked both sides of the corridor.

  Tianxia and others fell into encirclement once again.

  Ambushed in front and pursued from behind.

  Faced with this situation, the experienced and wise captain Raymond immediately made a response:

  "Tian Sha, you go to the other side and intercept the zombies, Hank and I will hold this place down, hurry up!"

  "Received!"

  The heavenly killer did not hesitate and took decisive action.

  Just now, he had already thought of a way to defeat the biochemical ghost.

  Platinum remodeling!

  This is a powerful function of the system.

  Consume Krypton Gold to modify and upgrade firearms, enhancing their quality.

  And the reason why the heavenly troops were repeatedly defeated by the biochemical ghosts was that they did not have powerful enough weapons to break through the biochemical ghosts defenses.

  The AK-47 is a black weapon.

  According to the strength of this biochemical ghost, in order to defeat it, the AK47 must be transformed into a more powerful green weapon: AK47-B!

  Dont delay.

  Every second counts, quickly rush to the rear of the team, take out the USP and fire at the approaching zombies.

  "Ding, host killed a level 1 zombie x1, gained 10 kilograms of Kylin."

  "Ding, host killed a level 1 zombie x1, gained 10 kilograms of Kylin."

  "Ding..."

  Several magazines of USP were fired empty, and Tianxia also harvested dozens of points of K gold value, but it was still far from the 1,000 points of K gold value needed to modify the AK47.

  The battle behind is still fierce.

  Without the help of Tianxia, team captains Raymond and Hank were increasingly at a loss under the onslaught of Biochemical Ghosts, and they seemed to be on the verge of collapse.

  Tianxias eyebrows were beading with anxious sweat.

  He looked around and suddenly saw the mercenary hunter, Rena, who was desperately trying to save Yan He.

  "Rena, give me your M4!"

  The sky was filled with a loud roar, but the USP in his hand did not stop firing for a moment.

  Receiving the M4A1 rifle thrown by Lena, Tiānxiǎo tightly grasped the trigger.

  The M4A1s long, black iron muzzle spewed out a dense flame, countless bullets flying out of the barrel at a speed that was too fast to be seen.

  The muzzle of the gun swept back and forth, the sight at the center of her field of vision always trained on the zombies heads.

  Many zombies were directly blasted by him, with waves and waves of EXP emerging from their bodies.

  The M4A1s magazine empties quickly.

  Under Tianxias crazy and precise sweep, nearly half of the zombies in the rear of the team were eliminated.

  In Tianxias brain, the energy slot was also rapidly rising in value, and within just a few dozen seconds, it had already been filled to the brim.

  The amount of Kryptonite required for the transformation has been fully collected.

  Tianxia grabbed the discarded AK-47 that had been tossed aside by the biochemical ghost, a faint light spot in his mind.

  In an instant, a faint light burst into red brilliance, and a crisp electronic sound echoed in Tianxias mind:

  "Ding, detected black weapon AK47. Confirm spending 1000 gold coins to upgrade it to green weapon AK47-B?"

  Confirmed!

  The heavenly axe has cut off all paths.

  A green light that only he could see enveloped the scrapped AK47.

  A concentrated Kyrium force is injected into the AK-47.

  The cracks and gaps on the AK47s body instantly became smooth as new, the entire gun gleaming with a rich luster, shining brightly under the dim green light!

  Although thousands of gold coins were consumed in vain, what was exchanged for it was a powerful killer that could turn the tide of battle!

  "Ding, Krypton Gold upgrade successful, congratulations to the host for obtaining a green weapon: AK47-B."

  Tightly grasping AK47-B, Tian Shao returns M4A1 to Lina and rushes towards the biochemical ghost!

  Heavenly Retribution firmly holds onto AK47-B.

  The crosshairs in the field of view turned bright red at the moment they locked onto the head of the biochemical ghost!

  "Biochemical ghost! Look at the gun!"

  Dada dada dada...

  After modification is complete, AK47-Bs bullets are also fully restored.

  The muzzle shook violently and a string of orange-yellow flames spewed out.

  Yellowish bullets rotated and shot out under the propulsion of gunpowder, flying straight towards the biochemical ghost.

  After the potassium gold transformation, the AK47-B upgraded to a green weapon far surpasses the previous AK47 in power. Every bullet fired can cause significant damage to biochemical ghosts.

  This is also the reason why Tianxia chose to modify AK47 instead of M4A1.

  The Bio-Hazards body splattered with blood flowers, but it was completely infected with the green-colored blood of the bio-virus.

  It let out a mournful howl.

  Kaito wont give the Biohazard Ghost any chance to breathe.

  The AK-47 continued firing, shells dropping all over the ground.

  Tianxia quickly reloaded after emptying a magazine and continued to attack the biochemical ghost with a hail of bullets.

  Captain Raymond and Hank were amazed at the power of the firearms in Tianxias hands, while continuing to fire and pin down the biochemical ghosts.

  The injuries on his body were getting heavier and heavier.

  Even with the powerful recovery brought by biochemical viruses, the biochemical wraiths gradually lost their strength to return to heaven.

  It finally began its desperate struggle.

  A faint green whirlwind condensed in front of him, and the speed of the Bio-Spectral Phantom suddenly increased.

  It swung its two steel-clawed arms wildly, charging forward non-stop, wanting to tear the Tianxia into shreds.

  However, the AK47-B in Tianshas hand was really too powerful.

  The bullets were fired continuously, and even the barrel became red-hot due to prolonged firing.

  Biochemical ghost faced this metal torrent baptism, more and more bullet holes on the body, a string of blood arrows shot out.

  "Ahhhhh!"

  "Roar!"

  Tianxia and Shenghua Youling roared at the same time, AK47-Bs muzzle and steel claws were only a few inches away from each other.

  The striker strikes the primer at the bottom of the cartridge, igniting the gunpowder inside the bullet. The intense thrust produced in an instant suddenly propels the projectile out.

  The bullet rotated in mid-air and hit the biochemical ghosts eyebrow with precision.

  In an instant, the biochemical ghosts head burst open like a watermelon, splashing blood everywhere.

  "Ding, host killed a level 1 Biochemical Ghost x1!"