"Bang bang bang!"

"Boom boom boom!"

The trackers moved with incredible speed, and in a matter of moments they reached the four-legged monsters, dividing into groups of three to surround and deal with these enormous war beasts.

It must be said that these trackers are indeed incredibly powerful. Although their individual strength is slightly inferior to these biological weapons that excel in strength, with San San's cooperation, they have effectively hindered their actions.

Moreover, the particularly large Tracker Type 3s were even stronger than the massive four-legged beasts, and fought them head-on with overwhelming force.

With a series of loud roars, the battle reached a stalemate once again as the two sides clashed.

At this moment, the human alliance, under Chen Fang's command, also readjusted its formation, directing its ordinary soldiers to continuously hunt down the fearless killers who charged into the fray.

"All-out attack!"

Seeing that long-range firepower was ineffective and close-range units were blocked by human forces, Jealousy, which had been hiding within the biological legion, finally could not hold back any longer. He took a deep breath and loudly ordered the entire biological legion to charge.

Since the main battleground is inside the dungeon, dragging out the fight will only be more disadvantageous for Demon Mountain's side.

After all, due to the fighting, biological weapons cannot be produced again in the short term.

On the other hand, the human side has a continuous supply of soldiers, so jealousy can't be contained. It attempts to use a full-scale attack to break the enemy's formation and then find an opportunity to kill the human commanders and strongmen.

Once the human leader is successfully killed, the human alliance will be leaderless and its morale will be greatly reduced.

At that point, dealing with ordinary humans who have lost their will to fight will be much easier.

"Charge the entire army!"

"Charge the entire army!"

"Charge the entire army!"

With the order issued by Jealousy, the commanders hidden among the various biological weapon legions began to frantically deploy their biological weapons, launching a full-scale offensive.

The next moment, the biological legion charged forward like a tsunami, layer upon layer, seemingly without end, surging towards the human alliance.

Seeing the densely packed biological weapons advancing frantically amidst a hail of bullets, Chen Fang's face instantly turned extremely grim, his teeth grinding together: "Pass on my order to execute Combat Plan Two and prepare to meet the enemy's charge and the ensuing melee!"

Now that the battle has progressed to this point, victory or defeat can no longer be determined by tactics or strategy.

Under these circumstances, full-scale contact, or even a chaotic battle, between the human alliance and the Demon Mountain creature legion is now unavoidable.

Therefore, Chen Fang decisively issued an order, instructing all troops to implement the No. 2 combat plan designed to deal with the chaotic battle.

As a result, while heavy casualties on the human alliance side were still unavoidable, their counterattacks were enough to severely damage these biological legions.

As for the final outcome, it all depends on luck, morale, and true strength.

Combat Plan No. 2 is a group-based combat strategy that uses key points to drive overall operations.

All soldiers will fight and counterattack in pre-assigned squads, relying on the evolved beings in their squads.

Meanwhile, squads rely on stronger squads to launch joint counterattacks.

In this way, even if they are caught in the middle of a chaotic battle, the human alliance can remain organized and launch a well-ordered and fierce counterattack.

"kill!"

"Roar!"

"Boom boom boom!"

"Da da da!"

With the order issued, the battle formation of the human alliance began to change rapidly.

Moments later, the human alliance, having completed the adjustments to the second battle plan and prepared for the assault, finally met the biological legion's charge head-on.

Instantly, the two armies, belonging to different civilizations but equally fierce, ruthless, and fearless, clashed head-on, engaging in a frenzied battle.

In an instant, gunshots, cannon fire, screams, shouts, sounds of slaughter, and roars of beasts—all sorts of completely different sounds—mingled together throughout the underground city.

The sound, like a deathly dirge drifting from the deepest part of hell, made the bloodshed and cruelty of the entire battlefield even more desolate!

Of all the types of wars, the most brutal and deadliest are often the chaotic battles.

This was not only because the soldiers on both sides were locked in a fierce battle with no way out, but also because of the emotional intensity of the situation.

When the human alliance and the biological legion clashed completely, the humans, filled with boundless hatred, finally launched an unprecedented and fierce counterattack despite being at a disadvantage in individual combat strength.

Because right now, standing before them was the very culprit who had caused their family's destruction and death.

After the apocalypse, scenes of family members dying tragically flashed before the eyes of the human soldiers, making them no longer care about the horror of death and vowing to use all their strength to make the enemy pay a bloody price.

When this fearless, even suicidal, mentality spread, the entire human alliance was filled with a sense of madness.

At this moment, all the conflicts between the Allied soldiers disappeared.

Even though these soldiers had once fought each other because of different beliefs or nationalities, at this moment, they were willing to give their lives to shield the enemy from a fatal blow from a biological weapon and create an opportunity for the enemy to counterattack.

Because at this moment, in this place, ethnic beliefs are no longer important.

This is a war between human civilization and the X-planet civilization; this is a war of revenge for all of them!

In this battle, human soldiers may die, but they must never lose!

Because if we lose, it means that the human race will disappear from Earth, and even the surviving humans will become slaves of alien colonists.

Such an outcome is unacceptable to these passionate warriors who yearn for freedom!

……

"Damn it! Damn it!"

He witnessed a brother who, to shield him from a fatal blow, rammed into the hand blade of a mantis bio-weapon. His body was cleaved in two, and at the same time, the Glory Bullet on his body detonated, causing him to perish together with the monster.

Xiao Li's face showed grief and indignation, as well as a fierce killing intent. He roared and used the two laser guns in his hands to continuously kill the biological weapons.

Although he wasn't an evolved being, his years of military training in the Eagle Special Forces enabled him to achieve results far exceeding those of ordinary evolved beings.

As he fired his twin pistols, beams of energy precisely pierced the vital points of each bio-weapon.

In just over ten seconds, he single-handedly killed eleven biological weapons. However, Xiao Li's outstanding performance also led him into a dangerous situation.

Upon discovering the threat posed by Xiao Li's precise marksmanship, two significantly larger killers, one on the left and one on the right, shot towards Xiao Li at a speed beyond the reach of the naked eye, accompanied by a piercing whooshing sound.

"kill!"

Seeing the two higher-level killers hurtling towards him, a resolute glint flashed in Xiao Li's eyes. He knew that with his combat strength, dealing with two mid-level or even high-level biological weapons at the same time would be a certain death.

But facing certain death did not mean he would give up the fight. With a roar, he pulled the triggers of his twin guns, unleashing beams of energy that he instinctively aimed at the two biological weapons that were now too small for his naked eye to detect.

"Puff puff!"

It must be said that Xiao Li's combat intuition was extremely sharp. Although he was unable to track the movements of the two, the route he predicted based on his experience and intuition was exactly the route that the two killers were heading.

Instantly, accompanied by bursts of energy beams and the soft sound of tearing flesh, the two biological weapons that shot towards them trembled and stopped advancing after being hit by the energy beams fired by Xiao Li.

Taking advantage of this opportunity, Xiao Li pulled the trigger again, attempting to kill the two biological weapons.

However, these two killers are no longer low-level biological weapons, but rather a very powerful type within the X-Star biological weapon system. Although the laser guns are powerful, they cannot threaten their lives unless they hit vital organs.

Even their combat capabilities cannot be affected much.

Seeing Xiao Li raise his gun again to fire, the two cunning killers moved erratically, taking irregular routes to surround him.

"Whoosh—whoosh—whoosh!"

After being hit by the laser gun, the two bio-weapons were not seriously damaged, but their speed was slightly affected.

In this way, although Xiao Li still could not grasp their whereabouts, he could vaguely see their figures.

Facing the incoming biological weapon, he took a deep breath and focused his aim.

He knew that if these two got close, he would truly be doomed.

Therefore, the only thing he can do now is to concentrate and try his best to capture the slightest possible trace.

As his breathing slowed, Xiao Li's eyes brightened unexpectedly. In his eyes, the world seemed to slow down considerably. Even the two biological weapons, whose trajectories he couldn't track before, appeared to him to be running at the speed of an ordinary person.

Seeing the two "slowly" charging biological weapons, Xiao Li narrowed his eyes and, in the nick of time, raised his two guns and pulled the triggers heavily.

"Pfft!"

With two short, muffled thuds, two beams of energy tore through the sky and pierced the vital points of the two biological weapons.

Even though these two killers were worthy of being classified as intermediate biological weapons, a vital point is a vital point. The moment the two energy beams pierced their vital points, the two killers trembled and fell heavily to the ground, sliding a long distance before coming to a stop.

"call!"

After killing the two killers, the light in Xiao Li's eyes dimmed instantly. He let out a long breath, his whole body trembling slightly, and he could barely stand.

Although he was in a strong state just now, it also brought a lot of burden. At this moment, Xiao Li felt dizzy, his heart was throbbing, and his body was trembling. He was obviously exhausted.

At that moment, more than a dozen biological weapons were shooting toward his location.

Clearly, Xiao Li's act of killing those two mid-level bio-weapons has made them regard him as a formidable enemy with great threat.

"Killing so many, we've gotten our money's worth!"

Looking at the multitude of biological weapons rushing towards him, a helpless yet resolute expression appeared on Xiao Li's lips. He lightly placed his right hand on a button at his waist and muttered to himself, "Come on, hehe, if I can take a few more down with me before I die, it'll be worth it!"

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