Doomsday Disaster: Start by Building a Shelter - Chapter 291

Chapter 291 The Breakthrough Line of Defense

“Amethyst was detected approaching the second line of defense.”

“The automatic tower starts to enter the activation state.”

On both sides of the exit above the magma canyon.

The 17 towers lined up in a row, and the mailing towers built from rapid cement entered the self-test state before opening.

The Thunder-class optoelectronic cannon above slowly rotates.

The terrifying multiple muzzles were aimed at the location of the magma canyon.

After more than ten seconds.

The insect-shaped flying amethyst began to gush out of the canyon in pieces.

The spider robot guarding around the sentry tower took the lead in firing.

Then, when more and more flying amethysts appear, spider robots alone have already seemed to have insufficient firepower.

The photoelectric cannon on the whistle tower began to really start.

Accompanied by a slight buzz.

The shell with a diameter of 32 mm was sprayed out of the whistle cannon at a speed of 200 rounds per second.

Turns into a desperate metal storm.

Use super high speed to tear all obstacles that block the road.

Most of the entire canyon exit was instantly cleared.

Five seconds later.

The cannon stopped firing.

Only the spider robot is left behind, continuing to cope with the remaining flying amethyst.

The Thunder-class optoelectronic cannon on the whistle tower is powerful.

The speed of consuming ammunition at full strength is also terrifying.

Even the ammunition is used, solid shells made of cheap metal.

The overall cost cannot be underestimated.

Therefore, for the sake of maintaining long-term combat capabilities and reducing logistical pressure.

It will only after the amethyst quantity gathers to a certain extent and has sufficient strike value.

It will be started for suppression.

Under normal circumstances.

It is still a more affordable spider robot that uses electromagnetic rifles for precise point shooting.

Under this powerful firepower blockade.

The flying amethysts hit several rounds in a row, leaving behind more than 100,000 corpses.

All of them have never truly escaped from the range of the magma canyon.

Until the 7th minute after the battle.

A violent explosion suddenly appeared under the foundation of a certain sentry tower.

After blowing the entire whistle tower up and shaking.

This unilateral massacre.

There has only begun to change.

Su Wu, far away in the control center.

Search the battle log and analyze the battle scene.

The explosion was discovered to be derived from a variant of amethyst.

It can briefly shield the scanning of the crystal detector and sprint underground for a distance at an extremely fast speed.

Then, after arriving at the destination, self-destruction was carried out.

The power of the explosion is about 122mm, and howitzer that uses military gunpowder to fill the warhead.

“It’s a problem.”

Su Wu had a headache.

The sentry tower is not far from the crack exit of the magma canyon. It is not a land warship, and can be moved at will.

Adding these two situations.

It becomes that the traces of the amethyst that cannot be scanned. The position of the sentry tower cannot be changed, and the dangerous self-destructive amethyst can be kept safely away.

You can only be beaten passively.

boom!

Just as Su Wu was chasing the source of the explosion under the foundation of the sentry tower.

More self-destructive amethysts began to appear around the whistle tower.

But for a while.

The foundation of one of the sentry towers was destroyed a small part, causing an tilt to appear above it.

Su Wu pondered for a moment.

Decided to take the initiative.

Deliver spider robots and combat drones clusters to approach the crack position.

Press the flying amethyst near the surface of the magma canyon, so that the self-destructing amethyst hidden in them cannot easily pass through the rock walls on the upper layer of the canyon and approach the sentry tower from the ground at the shortest distance.

This is not a good way.

It is actually equivalent to rebuilding the first line of defense.

But spider robots and combat drones are not professional automatic firepower platforms embedded in the rock walls on both sides of the canyon.

They have quite limited shooting angles and ammunition reserves.

And his own defense is also weaker.

Embodied on the battlefield.

It was with the assistance of the heavy artillery cluster located at the foot of the Qinling Mountains.

Finally, the flying amethyst was driven back to the surface of the magma canyon.

The next moment.

Wait until the heavy artillery stops and enters the cooling period.

The flying amethyst will make a comeback again, fighting fiercely with the spider robot near the crack.

Under this intense entanglement.

Self-destructive amethyst disguised as insects can still find opportunities occasionally and drill into the rock wall again.

From time to time, it continues to cause damage to the sentry tower.

“It seems that the whistle can’t be saved.”

Watching the development on the battlefield,

Su Wu realized that the second line of defense had been broken, which was basically a foregone conclusion.

The difference is nothing more than a matter of time.

But before the sentry was completely destroyed.

Su Wu also needs them to complete a task.

That is to act as bait to capture a self-destructive amethyst that is complete, or at least retains most of the remains.

Take as a sample to study how they escape the detection of crystal detectors.

“Driven high-precision geological vibration probe.”

“Build a calculation model.”

“10 aerial 6th-generation fighter jets were drawn to carry ground-based missiles and go to Qinling Mountain to support them.”

Transfer the latest commands on the console.

The super factory located on the 8th floor of the shelter immediately began to vacate a production line.

More than 10 geological vibration probes were produced and assembled on site.

This kind of thing is a special equipment specially customized by Su Wu based on the self-destruction of amethyst.

It can detect various slight changes underground within dozens of meters around it.

This can indirectly calculate the activity trajectory of the self-destructive amethyst.

Of course, since there are no samples yet.

This kind of detection belongs to the most basic type of indiscriminate observation.

Whether it is useful or not, any abnormality will be detected, and it will be fed back.

The consequence must be a large number of false alarms.

But that’s OK.

As long as you can win once, it will be considered as completing its mission.

And at the same time.

A corner of the holographic projection of the metal platform.

A map of the surrounding structure of the whistle tower was drawn from silver-white lines.

Wait until the customized equipment and 10 aerial sixth-generation fighter jets are in place.

Artificial intelligence will devote a lot of computing power to it.

According to the detection results, guide the sixth-generation fighter jets to launch ground attacks.

Strive to intercept and destroy the amethyst in advance.

This is also the only way to obtain self-destructive amethyst samples.

Otherwise, when it explodes on its own, Su Wu will be able to get nothing.

After more than ten minutes.

A small farmyard, on the ground.

Four vertical take-off and landing platforms.

Two biplane helicopters loaded with the newly produced geological shock explorer took off first.

Then there were ten sixth-generation fighter jets carrying more than 10 ground-based missiles.

In order.

Accompanied by the flashing green indicator light, I slowly arrived from the hangar to the extremely cold outside world.

Then floated in the air and ignited the engine. It roared and flew towards the direction of Qinling Mountains.

Everything is going on in an orderly manner.

Qinling Mountains, above the magma canyon, around the cracks.

Here at this time.

Compared to more than ten minutes ago, it is completely different.

As five or six towers were successively destroyed by self-destructive amethyst.

The second line of defense was torn into a large area with weak firepower.

New third and fourth amethyst forms.

With the assistance of flying amethyst.

It began to spread from the ground one after another.

No mistakes, one song, one content, one in 6, one book, one bar, one reading!

One of them is a scorpion that is the size of a calf and covered with gray-white rock-like shell.

A special electromagnetic rifle originally loaded on a spider robot, targeting the amethyst prototype.

When it hits it, it can only leave a shallow mark.

Only rockets, or electromagnetic sniper rifles, can slightly hinder its pace.

But want to kill it.

A number of concentrated fires must be carried out.

Only after penetrating its rock shell and breaking its inner brain at the center of the body can it be truly completed.

In terms of difficulty.

It is even harder to deal with than the light tanks currently in service in the Federation.

Another type is that it is a red glow all over its body, a bit like a lobster, but at least the size is comparable to the evolution of a family car.

This amethyst, named Magma Growler.

Most parts of the body are filled with high temperature gas and lava.

The lava in the body can be compressed into shells through the tail and shot out from a distance.

The destructive power is equivalent to a shell with a 32mm.

It doesn’t seem too exaggerated.

In fact, it has reached the highest level of heavy weapons that light infantry units can be equipped in modern army.

And while the destructive power meets the standards, when their numbers accumulate.

The power burst out.

It seems unusually terrible.

They tore a huge gap on the front of spider robots.

Any ordinary spider robot that blocks the way.

Either they were violently knocked out by rock scorpions or killed by several lava growlers.

No one can survive for more than 10 seconds.

The situation is slightly better when reinstalling the main battle spider robot.

Faster movement speed, thicker body and loaded arc defense array, and a more powerful main gun.

Make it easier to distance from the amethyst mass.

And in the movement, he used his main gun to efficiently kill the lava growlers that threatened the most.

But an individual’s outstanding performance cannot reverse the overall situation.

The cost of reinstalling the main battle spider robot is too high and the quantity is too small.

They can swim on the edge and constantly chew on some of the amethyst. But it cannot stop the main force of the amethyst from crossing the defense line and rushing toward the more periphery.

When the biplane helicopter carries equipment to the battlefield.

The several rock scorpion amethyst located in the front have begun to test the firepower of the third line of defense sporadically.

“The Robot Legion retreated.”

“The heavy artillery cluster began ten rounds of long-range artillery bombardment.”

“Cover the following areas—”

Artificial intelligence has no negative emotions of tension and panic.

Seeing that the second line of defense is about to be completely broken through.

Call for heavy fire support immediately.

Extreme firepower.

It still has not expired here.

Accompanied by more than 100 heavy artillery shells carrying devastating power, they fell heavily on the battlefield.

The amethyst’s offensive suddenly slowed down.

Whether it is a magma growler whose body is covered with lava, or a rock scorpion as thick as a tank.

They are unable to withstand the huge shock waves brought by heavy artillery.

One by one, they were blown up or overwhelmed.

And take advantage of this opportunity.

Two biplane helicopters hovering in the sky.

Under the clustering and protection of combat drone clusters.

Landed near two undestroyed towers on the ground.

Several spider robots who had been waiting on the ground were responsible for transporting the high-precision geological vibration probe they brought to the inside of the sentry tower.

Then continue to take off and head to other sentry towers.

After repeating this several times.

When a biplane helicopter was about to land near the last sentry tower.

A series of violent explosions suddenly emerged inside the whistle tower.

Powerful shock wave.

The body of the whistle tower cast by fast cement will be torn into pieces in an instant.

Then a stream of blazing flames shot out from the cracked gap.

Turns into a rolling heat wave.

Forced to approach the biplane.

The huge body that had not yet been able to completely land on the ground pushed back several meters.

“Only 9 sentry towers are left.”

Su Wu stood next to the metal platform, looking at the projected Qinling Mountain battlefield.

It seems that you can feel the wisdom existence that manipulates these amethysts behind it.

The firm will to completely break free from the cage.

Thinking about it.

He interfered in the command of artificial intelligence.

Let the spider robots stationed on the third line of defense continue to retreat.

Only a large-scale combat drone cluster and a Marine Legion dominated by reinstalled main battle spider robots are retained.

Since facts have proven.

The electromagnetic weapons carried by ordinary spider robots can no longer cause effective damage to the amethyst variants on land.

Then there is no need to let them stay on the battlefield and die for nothing.

And leave behind a complete combat drone cluster.

This is to deal with the flying amethyst that is currently flying higher and higher in mid-air.

Although single flying amethysts have little lethality, once they are allowed to gather to a certain scale.

With their more agile mode of action than combat drones.

It is completely enough to become a force that may change the entire battlefield situation.

Therefore, even if it is used as a combat drone and flying amethyst, it will fight frontally at close range.

The casualty rate is astonishingly high.

They cannot be allowed to retreat.

On the ground.

With the massive exit of ordinary spider robots.

There is no scruples of heavy artillery cluster.

The full speed bombardment mode began for a full 15 minutes.

The shells that covered the sky and the sun baptized the entire magma canyon and most of the places where the second line of defense was located.

It only avoided the surroundings of 9 sentry towers.

And during this period.

A large number of amethyst variants are still continuously pouring out from the magma lakes in the magma canyon.

Continue to use the help of flying amethyst, or climb up the rock walls thousands of meters high by yourself.

Try to rush to the third line of defense.

However, this impact was completely futile.

Even if they did not fall under the heavy artillery shells falling along the way, they would approach the third line of defense.

The Thunder-class optoelectronic cannon that was towering there was easily torn to pieces.

Just as they are on a scale, they are enough to crush ordinary spider robots.

Facing the optoelectronic cannon.

They also became the objects of crushing.

If it appears in the firing world of the machine cannon, there is almost no possibility of surviving.

(End of this chapter)