In the end of the world, I become an immortal alone

Command communication channel.

"What?"

The semi-mecha Deep Sea thought he had misheard.

"There's a high probability that a Blade Beast's new nest is being built underground in Fortress 76? That's impossible! Unless a new burrowing variant of Blade Beast has appeared, allowing them to operate in the stratum more than two thousand meters below, and withstand the immense pressure of the Earth's crust! Is such an underground passage even possible? Also, if there is such a new variant, why isn't it coming to support the Young King Worm? It only needs to go deep underground and destroy the passage, and we won't be able to pursue!"

Dongfang Zhenghong said quickly, "I don't want to believe this conclusion either, but the people who pointed out this possibility are Wang Zheng and Wu Man."

Outside the command vehicle.

More than a dozen medium and large multi-rotor aircraft have already taken off, dragging the mecha and armored vehicles of the emergency mobile unit below, and are advancing rapidly towards the fortress.

Fortunately, the process of this encirclement and suppression of the Young King Worm was very smooth. The emergency mobile units at all three locations were not needed. Two tactical nuclear bombs solved a King-level Blade Beast that had not yet grown up.

And now, these emergency units can return to the fortress at high speed, requiring only two hours and twenty-five minutes of travel, then…

Dongfang Zhenghong said in a deep voice: "Report the damage situation of your three mechanical arms."

"Ling Tong's mechanical arm suffered electromagnetic shock. The two of us are covered by external mecha, and the main body is in good condition. She needs maintenance."

Deep Sea said quickly:

"Please let our supply convoy move towards the fortress. We will catch up from behind."

"The shortest maintenance time is half an hour. Ling Tong will activate her spare mechanical arm, and the two of us will rush over first."

"Now, we can only hope that, if… there really is a new nest being built by the Young King Worm below Fortress 76, the fortress's own defensive barriers can withstand it for two hours."

Dongfang Zhenghong said: "I am already contacting the Governor. Once a Blade Beast is discovered, the independent protection devices on each level of the fortress will be activated immediately. Fortress 76 has an important cornerstone role for the Zhonggu Basin war zone and the D5 integrated war zone. I will immediately apply for support from the two-level command center!"

Deep Sea did not reply.

Dongfang Zhenghong took a deep breath to keep himself calm, although his fingers were already trembling slightly.

He looked to the side.

Zhou Zhengde was sitting in a technician's seat, with a projection screen in front of him.

The projection screen showed the situation inside an aircraft.

Wang Jixuan was applying a nano-mask to his face, with a black tactical helmet beside him.

Wu Man and the two accompanying technicians were debugging a simple signal amplifier. The power of this amplifier was not very good, and the coverage was limited, but the advantage was that it could be carried with you.

These instruments were very complex.

Dongfang Zhenghong kept thinking.

There are also two B-level psionicists and more than a dozen C-level psionicists, and more than twenty D/E-level psionicists in the fortress.

If a Blade Beast disaster breaks out, they should be able to play some role.

The problem now is that I don't know when the Blade Beast disaster will happen. There will be a large number of larvae with soft exoskeletons in the Young King Worm's nest. If it can be delayed until the mobile unit returns…

"Commander, Commander! Blade Beast reaction! A Blade Beast reaction was detected 300 meters below the bottom of Fortress 76!"

Dongfang Zhenghong sat up abruptly, almost shouting: "Map! Three-dimensional diagram!"

Whoosh!

A three-dimensional diagram of the fortress appeared in the center of the holographic sand table in front of him, with a cross-section of the fortress next to it.

The fortress was like a standard cylinder, embedded in the shallow crust, with forty-nine layers of varying heights inside, marked in blue, green, and yellow for the upper, middle, and lower cities, respectively.

There were seven or eight marked 'thin layers' outside the fortress, which were the outer wall of the fortress body, the external composite wall, the multi-layer armored wall, the self-defense infinitely thickened wall, and so on.

Outside these walls, there was a dark area, about three hundred meters thick, which was a trigger-type minefield filled with a large number of mechanical mines, which would be detonated as soon as a burrowing beast touched them.

This kind of defense layer, in theory…

A flashing red dot appeared below the three-dimensional diagram of the fortress.

Dongfang Zhenghong held his breath and stared.

A red dot approached the bottommost minefield, paused slightly, moved up a small grid, and then quickly fell down.

The second red dot appeared, moved up a small grid again, quickly fell down again, and then moved forward again, falling diagonally after rising two small grids.

The minefield was breached.

Two 'burrowing worm' Blade Beasts were killed or injured.

The third red dot entered the detection range, quickly rose, and after passing through the gap in the minefield, reached the outer wall of the composite defense layer.

'It can be blocked, this layer can definitely be blocked, this layer must be blocked!'

Dongfang Zhenghong almost squeezed blood from his palms.

The red dot suddenly jumped up a large section!

The three-dimensional projection of the fortress instantly turned red!

Dense red dots appeared below, swarming towards that passage!

"The defense has been breached!"

"Fortress is under attack by a Blade Beast swarm!"

"Blade Beasts have appeared on the bottommost level of the lower city! A large number of Blade Beasts! The number has been identified… four thousand! And it's still increasing!"

Dongfang Zhenghong cursed, he just wanted to ask now, why didn't the bottom defense zone play any role!

"Activate the layered independent defense equipment! Let the psionicists go down! Where is the fortress cleanup unit!"

"They are in battle!"

"Make them hold on even if they die! Damn it! Why did the bottom defense zone fail!"

"Professor Zhuang and Kong Nu's secret laboratory dug too deep in order to avoid routine inspections, and they laid a camouflage layer. There had never been a breach from the bottom before…" Zhou Zhengde's Adam's apple trembled, "Probably."

In the screen in front of Zhou Zhengde.

Wang Jixuan, who had learned about the situation in the fortress through communication, leaned back in his seat.

"Is there any faster way to get back?" Wang Jixuan asked softly.

Zhou Zhengde frowned and thought.

Wu Man whispered: "There is a way. I saw it in the combat mech's violation manual. A combat mech once used this method to rush to the battlefield. However, this requires consuming a missile and a body that can withstand super-strong acceleration."

Wang Jixuan was stunned for a moment, then immediately nodded.

This is better than not being able to do anything.

…

Five minutes ago.

Fortress 76, 49th floor, former Black Fire Gang territory, cleanup unit station.

Cleanup unit commander Wang Lei leaned against an armored vehicle, the screen on his wrist constantly jumping out battle reports from the front line.

This was a middle-aged man in his forties, with a burly figure and a square face. He had worked in the fortress cleanup unit for twenty years, and was considered a well-known figure in the Fortress 76 garrison, the kind who could directly apply to see the governor.

"Captain, how is it? Did you kill the Young King Worm?"

A team member next to him asked curiously.

"It's been resolved," Wang Lei laughed, "Three combat mechs shot at the same time, and there were also psionicists from the front line of the war zone, and two tactical nuclear bombs were used."

The team member in the armored vehicle took the opportunity to say: "Then captain, how about we go celebrate for them? Let's have a drink!"

"Drinking is not allowed during work hours."

Wang Lei clicked his tongue:

"When this garrison mission is over, I will apply for a vacation for you, and then I will invite you to a desert barbecue feast!"

Several people laughed in a teasing manner.

The command wrist watch on Wang Lei's wrist suddenly vibrated at a high frequency, and a red box popped up on it.

An order from Dongfang Zhenghong from the front-line headquarters.

[The fortress may be attacked by a Blade Beast swarm, and the attack direction is most likely directly below. Please prepare for battle immediately.]

Wang Lei was stunned for a second, then thought of something, rushed back to the armored vehicle in one stride, and pressed the red button in front of him.

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"Everyone! Enter combat status immediately! Issue a Blade Beast disaster warning! Set up all heavy firepower at high points! Quick! Turn on full-area lighting! Issue a Blade Beast disaster warning! Let everyone try to hide in small spaces such as refrigerators or sewers!"

The cleanup unit station, which was originally in a semi-relaxed state, suddenly became chaotic.

But they all had good training and would often maintain emergency mobile drills. Dozens of armored vehicles here had already started and quickly assembled under Wang Lei's dispatch.

Rumble—

A dull explosion suddenly came from the depths of the earth.

The ground was trembling slightly.

Some dust fell from those simple houses.

The explosion stopped temporarily, but only twenty seconds later, another explosion came, and the explosion became closer and closer, and the vibration of the ground became more and more obvious.

Suddenly!

Woo—

Several huge red lights lit up on the ceiling of the 49th floor, and a piercing alarm sounded on all floors of the fortress.

Boom!

The earth shook, and several low buildings in the northwest corner of the Black Fire Gang suddenly sank downwards!

"Over there! Turn on the lights!"

Wang Lei circled a red dot on the map, and several searchlights immediately turned on.

The collapsed pit sloped downwards, in an irregular oval shape. It seemed that nothing rushed out from inside, and those building blocks blocked the hole.

A suffocating wave filled the air!

The bio-detector suddenly turned red!

Looking at the dense red dots on the instrument, Wang Lei's face was pale and his breathing was rapid, but his eyes did not waver.

"A large number of Blade Beasts are coming! Attention! A large number of Blade Beasts are coming! The first to rush out should be the burrowing worms. Don't pour firepower immediately. The burrowing worm Blade Beasts have hard skulls and exoskeletons, and our firepower cannot break through their armor…"

A black shadow suddenly窜 out of the sloping hole!

A huge Blade Beast, more than thirty meters long, with completely degenerated legs and mouthparts evolved to break through diamonds, crashed straight out of the hole!

It swallowed most of the building debris blocking the hole, and its huge body completely broke away from the hole by inertia, collapsing the low buildings next to it.

Immediately following, a low-level basic Blade Beast crawled out of the cave, its mandibles opening to emit a sharp screech.

“First squad, open fire!”

Wang Lei shouted.

In the hands of the soldiers, the firearms designed for use against people simultaneously unleashed their firepower.

The terrifying Blade Beast’s mandibles spurted out emerald-green blood, its legs shattered by the armor-piercing rounds from the rapid-firing cannons, with severed limbs and blood splattering everywhere.

Everyone held their breath as the soldiers gripped their weapons tightly.

A dense scraping sound emerged from the cave.

It was the sound of legs scraping against the rock walls.

Wang Lei watched the number of red dots on the bio-radar… getting closer and closer, more and more…

The sloping cave was like a water pipe filled with water, suddenly gushing outwards!

The Blade Beast swarm was erupting outwards!

In just two seconds, hundreds of Blade Beasts leaped out of the sloping cave!

They charged towards the armored vehicles, towards the crowd. The firepower of the cleanup squad, sufficient to suppress all human gangs, seemed so inadequate and weak in front of them!

Armored vehicles were constantly overturned.

The soldiers, holding their guns, retreated while firing, only to have their chests easily pierced by the forelegs of the Blade Beasts that rapidly charged in front of them. The bulletproof vests were completely ineffective.

Assassination-type Blade Beasts, rapidly advancing, plunged into the crowd. Several soldiers screamed as their chests were directly severed.

“Open fire! Suppressive fire!”

“Ah!”

“We don’t have enough firepower! Not enough firepower!”

“Grenades! Throw grenades!”

“Fire the pulse cannons! Damn it! I’ll fight you bastards!”

The voices in the earpiece rapidly decreased, the screams grew louder and louder, and on the screen in front of him, the force of several hundred men quickly dwindled to just over a hundred.

Wang Lei pressed the button in front of him:

“Calling command, Level 49 has fallen. My unit is annihilated. Recommendation: seal off the lower city.”

After speaking, he dropped his rifle and dashed out of the now-empty armored vehicle in two steps.

Several team members were frantically firing, weapons mounted on both sides of the armored vehicle. Wang Lei ducked and rushed towards a toppled armored vehicle not far away, picking up a multi-barreled machine gun lying on the ground.

His command vehicle had been overturned by several Blade Beasts, and only the final two screams of several team members remained.

Wang Lei grabbed the multi-barreled machine gun and tried to aim it at the mandibles of a Blade Beast, veins popping out on his forehead, his face contorted and illuminated by the gunfire.

“I fuck your ancestors!”

The mandibles of a Blade Beast were quickly blasted apart.

A dark shadow darted past behind Wang Lei, and his upper body, still holding the gun, slid backward.

The gunfire ceased.