"Where?" In the command center, everyone looked at the surveillance screen.

I saw a huge mutant creature appearing in the northwest of the second line of defense.

Its appearance is different from all known creatures and mutated creatures. Its size is comparable to a five-story building, and its whole body is covered with tentacles that can be squirmed and grasped.

A huge crack was cracked on its back, and sharp teeth were covered in it!

It has no organs such as eyes and nose, and the front is filled with snail-like tentacles. These tentacles do not need to touch the entity to detect the terrain through ultrasound, and can also emit infrasonic waves to direct other variants.

Its body surface is covered with mucus, forming a protective film. Like the colloidal protective film of the sea civilization warship that Du Xingyu had seen in the previous world, this biological protective film can also withstand the damage of explosions and lasers.

Countless shells, machine guns and even missiles aimed at it, but they failed to stop it from moving forward.

As the fifth-level mutant moves forward, the tentacles on his body grab the mutant corpse on the ground and throw it into the mouth of his back. Tens of thousands of tiny teeth can be chewed into pieces within a few seconds and then digested by acid.

At the same time, a hole will appear on its head, which will face the sergeant facilities on the defense line like a gun barrel, and spray spherical objects wrapped in biofilms.

When these spherical objects hit military equipment, they immediately burst and the acid inside exploded.

This strong acid can corrode almost everything. Even the armored vehicles made of alloy will dissolve into a pile of metal and bio-strong acid mixture within ten seconds!

If someone touches you a little, you will die in an instant!

"This monster is so terrifying! Ignoring our attacks, I can still launch biochemical bombs to attack us!" The commanders were extremely shocked. Is this a level 5 mutant? It can actually advance on the battlefield with lasers and bombs!

Nothing can stop it, it swept almost everything! And those mutants that were killed by humans have become their energy source and their ammunition depot!

"No wonder the beast tide waited for so long to attack. It turned out to be waiting for such a big killing weapon!" Li Tai said horrifiedly, "If it is allowed to break through the defense line, the Yunzhou base will be out of protection!"

"Gather the firepower and must stop it! Launch a white phosphorus bomb and burn all the mutant corpses on the ground!"

He clearly realized that if the mutant's corpse was not removed, this level five mutant could constantly repair itself and attack.

The defensive line immediately concentrated its firepower to block the advance of the fifth-level mutant, but the effect was minimal. This guy's mucus bioprotective membrane seemed to be able to withstand high temperatures.

Du Xingyu and biochemical experts immediately began to study this level 5 variant.

"Based on its current performance, I will call it the battlefield sprayer." Du Xingyu casually gave it a name and said: "The defense ability of the battlefield sprayer is unquestionable. Now it is observed that its strongest weapon is biological acid."

"The flame will evaporate it into corrosive and highly toxic steam. The mutant has little effect, but it will affect our own operations."

"I think there are two ideal attack methods, one is biochemical weapon attack, and the second is to send the bomb to its mouth and blow it up directly from the inside!"

"Professor Du, it will take at least an hour to arrive in biochemical weapons. You can only use the second method!" said a military expert.

"Yes." Du Xingyu nodded and said, "We have more than a hundred predators left here, which can be used as bait."

The 1,000 predators he brought before had reduced by 900 information to enter the insect nest alone.

In the rear, Du Xingyu immediately asked someone to start the operation.

He broke the belly of ten predators, installed high-explosive bombs, and then stitched them together.

These "biochemical bombs" were thrown into the battlefield, disguised as members of the beast tide, and secretly approached the battlefield to spray the pitcher.

And at the defense line, the battlefield sprayers are still moving forward.

"Our laser weapons were destroyed!" The soldiers were still fighting on the front line, but the pressure on the battlefield sprayers put them too much!

This monster that cannot be beaten or killed is simply a nightmare!

"If this continues, there will be a gap here sooner or later!" The soldiers were so anxious.

The war with mutants is different from the war with humans. Once a hole in the defense line occurs and a large number of mutants pour in, it is not as simple as a battle!

The mutants are much more flexible than them, and they will be defeated at that time!

"Continue bombing!"

On the high wall, automated shells were constantly bombarding.

The fifth-level mutant had noticed it. It swallowed a giant skull-armored elephant's corpse into its big mouth and created dozens of acid bombs to project it out.

"Hiss..." The acid was poured on the turret like rain, and the turret was immediately corroded into a big hole. The shell that had not been fired exploded on the spot, and the turret was destroyed!

“Request support!”

"We can't stand it anymore!"

"The level five variant is about to break through the defense line!"

"Stick to it for another five minutes, the biochemical bomb is approaching it!" the commander shouted in the communication channel.

"Missile aiming!" In the base, the missile launcher has aimed at the fifth-level variant, waiting for the attack moment to arrive.

The predators with high-explosive bombs installed in their bodies have approached the battlefield sprayers. They followed the battlefield sprayers toward the human positions, disguised as members of the beast tide.

"The biological computer self-destruct program starts!" Du Xingyu remotely destroyed their biochemical brains, so that the predators would die on the spot.

Two predators died next to the battlefield sprayer, and they did not realize that this was a biological and chemical weapon made by humans.

Several tentacles sent their bodies into large mouths for chewing and digestion.

"Boom!" The high-explosion bomb exploded in its body, blowing out countless internal organ fragments and acid.

"So..." The battlefield sprayer began to twitch violently. Sure enough, the bomb detonated from the inside caused huge damage to it.

But this is not fatal enough!

"Missile launch!"

At the same time, five missiles were positioned through radar and aimed at the battlefield sprayers.

At this time, it was still in a serious state of injury and was unable to defend against so many missiles.

"Crash!" The sound of the sky and the earth cracked from the battlefield came from the battlefield, and black smoke filled the whole defense line, and a clearing of the open space was cleared out of the front of it.

The level 5 mutant battlefield sprayer has been blown up to pieces! He can't die anymore!

"Blast it to death!"

"Brothers, get it done!"

"Reinforcements are here, hurry up and repair the defense line!"

"Continue to attack!" the soldiers shouted, and when they saw that the mutant was blown to death, they rekindled their fighting spirit.

"It was finally blown to death!" Li Tai and others breathed a sigh of relief, "In order to kill it, the weapons we used were enough to destroy an armored force!"

"It's not over yet!" Du Xingyu's expression was still cautious.

"What's wrong?" Everyone looked at him.

"It is impossible that there is only one level five mutant!" Du Xingyu controlled the computer, adjusted to a specific screen, and said, "You see!"

Everyone looked closely and saw three more battlefield sprayers appearing behind the beast tide!

In addition to the battlefield sprayer, level five mutations also appeared in the sky.

It is a huge bird that humans have never seen before, or it is not an exaggeration to call it a flying dragon!

Its wingspan is dozens of meters long, with a huge head and a long tail.

Under the attacks of fighter jets and air defense systems, it can still avoid and defend, and easily destroy fighter jets!

The most terrifying thing is that it also has biochemical weapons. The tweet it emits is an infrasonic wave with extremely strong destructive power, which can penetrate defensive equipment and directly destroy the internal organs of the fighter pilot!

Some fighter pilots who could not dodge died suddenly in the cockpit, and the fighter plane crashed!

On a ground inside the second layer of defense, the concrete ground suddenly broke, and one had no head, a giant underground worm like a cow intestine drilled out, and it hit a turret. Before the soldiers could defend, it drilled into the ground and disappeared.

"So many level 5 mutants! There is also a beast tide!" The commanders' faces pale. How should we fight this battle?

"I can only wait!" Du Xingyu understood that it was difficult to turn the situation around with thermal weapons.

"Do you need to use nuclear weapons? But the mutant has invaded the inside and launched nuclear weapons, and most of the entire Yunzhou base will be destroyed."

Nuclear shelters are built below the Yunzhou base, but even these shelters cannot absolutely defend against nuclear weapons.

"How long will it take for biochemical weapons?" Du Xingyu contacted the transportation officer.

"Half an hour left!" replied the transport pipe.

"Half an hour." Du Xingyu said, "The second layer of defense continues to stick to it, including the third layer of defense. If it really doesn't work, you can even retreat to the base city!"

"Let the mutants rush into the city and fight streets?" Li Tai asked. Humans and mutants are almost bound to lose when fighting streets in the city!

"That's the worst case." Du Xingyu said, "Everyone, you continue to command. I want to study these two newly emerging level five variants."

He continued to collect information and analyze it.

Battlefield sprayers can use the old methods to attack it, and Du Xingyu named it the fifth-level mutant in the sky "Sound Wave Pterodes", which is characterized by the ability to emit infrasonic waves.

And because it can be detected by sound waves, only supersonic-level weapons can hit it.

"Use laser weapons! The laser's speed sound wave pterosaur will definitely not be able to avoid it. Use unmanned fighter jets to lure it, and then attack it with laser!" Du Xingyu sent a message.

The fifth-level variant that appeared underground on the other end was called "Stalker". It has not yet shown its biological and chemical weapons functions, but the attacks from underground are definitely something that humans can hardly cope with.

Moreover, it will pose a life threat to ordinary people in underground protection centers, and it must be killed!

While Du Xingyu was thinking, the Stalker destroyed several more turrets.
Chapter completed!