The M4A1-S originally held was switched to Steyr AUG by Tianxia.

  He took the lead and charged straight at the zombies.

  Cocking the hammer, the Steyr AUG bursts into a firing rate far surpassing other firearms, each bullet piercing the flames at the muzzle and shooting out.

  "Ding, host killed 1st-level zombie x10, gained 100 points of EXP."

  The electronic sound of gunfire erupted.

  A faint glow emanated from the fallen corpses of the zombies, surging into the energy slot in Tianxia's mind.

  Don't care about these worthless virtual items.

  Tianxia arrives beside his teammate and reloads the bullets of Styer-MG, continuing to sweep.

  He didn't expect that Shengdian Group's people would be so ruthless, even the mercenaries responsible for guarding had dormant biochemical viruses implanted in their bodies.

  Once the host dies, the latent biochemical virus in the body will be rapidly activated.

  Turn the host into a walking corpse.

  The appearance of these zombies made the battle in the first floor hall intense again.

  The joint squad had previously killed a number of mercenaries and was now surrounded by as many zombies.

  But because they have just mutated recently, these zombies are relatively low-level, so their combat power is not strong.

  Everyone can easily take down one zombie.

  But most importantly, it's about quantity.

  There were two or three hundred zombies in the lobby on the first floor. Even if Tian Shu and his team opened fire, it would take them several minutes to wipe them all out.

  Alarms keep ringing inside the biochemical laboratory.

  These few minutes are enough for the high-ranking personnel staying here to transfer all important items.

  Including the goal of their action this time:

  The Executioner of Biochemical Ghosts - The Judge!

  Then Flying Tiger Team Zhao Yi made a decisive decision immediately.

  Hand holding AK47 - Black Edge.

  Zhaoyi shot at the approaching zombies while saying to all members of the joint team:

  "We split our troops into two routes!"

  "Ling Hu, you guys stay here and eliminate the zombies, I'll lead Tian Xia and the others to charge into the Institute's interior!"

  "Got it, Old Zhao."

  After observing Bai Lang's expression, Ling Huo replied.

  Then, Ling Hu and others began to intensify their firepower, covering Tian Xia as they shook off the zombies' entanglement.

  Lock onto the target through the sight.

  The clever fox pulled the trigger.

  M4A1 - Rose opens fire and shoots, relying on her exquisite marksmanship to blow the heads of the three zombies in front of her.

  Then, the fox spirit quickly ran and moved to another location in the great hall.

  The muzzle of the gun with a silencer installed shook violently, and the purple-red body of the M4A1-Rose was particularly dreamy under the reflection of the gunfire.

  All remaining bullets in the magazine were fired out.

  Seven or eight zombies were just gnashing their teeth and brandishing their claws, but in the next second they were killed by the Ling Fox's wild shooting.

  On the other hand, the three fallen angels were also in a fierce battle.

  A whirlpool of air swirled beneath his feet, and the fallen angel's movement speed was even faster than usual.

  She held in her hand the shotgun striker - Tianyu.

  Rush into the face of zombies.

  The striker - Tenshou's gun muzzle was aimed at a row of zombies in front of him, and then the fallen angel pulled the trigger.

  The cartridge case is ejected from the ejection port.

  A dozen or so small but extremely hard steel balls burst out of the muzzle of Tianyu's gun, like blooming flowers, deeply embedded in the zombie's body, carrying inertia that directly tore the zombie's body apart.

  Kurt is still riding MG3-Silver Killer.

  As the target of this shooting changed from human to biochemical mutant, MG3-Silver Killer was finally able to show its full power.

  Biochemical damage enhancement attribute activated.

  Kurt stood steadily on the spot, using only his arms to adjust the direction of the MG3-Silver Killer's muzzle. The bullets shot out would penetrate a through-and-through hole in the mutant as long as they hit it.

  Shattered bone fragments and flesh mixed with blood flowed out of the bullet holes.

  Under the fierce howl of this powerful killer, in just a short while, the first floor hall collapsed with dozens of zombie corpses.

  The white wolf is even more ferocious.

  For some reason, after listening to the leader's Iron Knight's request for this operation, his emotions became particularly excited.

  The appearance of zombies made White Wolf thoroughly explode.

  It's like a volcano that has been suppressed for a long time, finally found an opportunity to vent, and turned the accumulated anger into hot magma, all erupting out!

  Clutching an AK-47, Bai Lang seemed like a ferocious wild wolf.

  The trigger was held tightly by him.

  The AK47-Warfield Army roared like a real army, emitting a deafening howl, although it was just a blue weapon, but it burst out with a power that was not inferior to the purple weapon.

  It's not over yet.

  After the magazine was emptied, Bai Lang did not replace the bullets for the AK47-Wild Battle Soldier.

  But switched to close-range weapon Nirix - Neon.

  "Go die!"

  The white wolf let out a furious howl and charged forward, its right arm coiled back to gather momentum before smashing down like a meteor.

  The sharp blade of the dagger, due to its excessive speed, was rubbed by the air and turned red, finally drawing a fiery red knife light that pierced the zombie's chest in one blow!

  With one punch, the White Wolf gradually calmed down.

  There were still many zombies in the hall. In order to eliminate them as soon as possible, the four Ling Foxes gathered together and began using throwing weapons.

  High-explosive grenade, ordinary grenade, incendiary bomb.

  A variety of projectiles with no less lethal force exploded loudly in the first floor lobby.

  Suddenly, flames shot up into the air.

  The zombies that were still struggling to resist in the beginning became completely powerless in the face of the fierce flames, either being torn into pieces by explosions or being roasted into charcoal by the continuously burning fire.

  Ling Hu and others immediately started reloading their guns.

  All zombies that were still moving or groaning, as long as they showed any sign of activity, would be shot and killed to eliminate the threat.

  One minute later, except for the still unextinguished flames, there was no other movable existence in the first floor hall.

  Ling Hu and others also set off towards the interior of the research institute, preparing to meet up with Tian Xia and the others.

  On the other hand.

  Tianxia found one of the targets of their mission, a high-ranking executive of Shengdian Group, Dr. I, who is skilled in human body modification.

  Judging from Dr. I's frantic appearance, it seems he was preparing something before the attack.

  So as to be defenselessly discovered by Tianxia.

  As one of the Five Great Doctors, Doctor I naturally has a large number of guards by his side, and he has even modified several third-tier pinnacle variant puppeteers.

  These forces all came forward together, and indeed slowed down the pace of Tian Xia and others by a lot.

  Just as the crowd was being held back, allowing Dr. I to escape, a bullet suddenly flew out and hit Dr. I's arm with unerring accuracy.

  The one who fired the shot was Ye Mei Gui (Night Rose).

  She used AWM-Molly and successfully implanted a tracking signal bullet in Dr. I's body.

  So even if Dr. I escapes from view, it can still be firmly locked in place through positioning.

  They would never avoid their pursuit no matter what.