Although it didn't last very long, it was enough for the energy required in the core area, and the core of the core area with enough energy seemed to be overwhelmed, and the whole began to faintly emit a reddish light, while at the core of the security base, the energy of one grid began to rise slowly.

A small platform rose from the last line of defense, and on top of the platform was a long, pointed blue spear, and the ring of energy around the spear for 4 weeks began to move slowly as the energy was injected.

Bursts of electricity struck the blue spear, and gradually turned into a spear wrapped in thunder as the energy increased, and the energy index in it began to rise sharply.

And the three mutant monsters that were following the monster at the gate and wanted to continue the impact felt a familiar sense of threat at this moment. With a panicked scream, the 4-week monster began to attack the defense line more ferociously, and it itself began to quickly retreat into the distance.

But no matter how much he retreated, he could never get rid of the faint sense of threat, and this sense of danger gradually became stronger with time.

Monsters that have reached three mutations have also been greatly enhanced their sensitivity to danger, and almost all of them have an early warning effect on upcoming attacks and threats.

The spear in the core area also began to turn red due to its charge, and began to change towards dark red.

However, the energy shown in the 4 weeks has been exhausted, and the time for the previous charge is not too long, and the energy gathered is not very large, but this can at least cause a certain danger to the monsters that have mutated three times.

With the end of the charge, the chief of staff directly gave the order to launch, and the weapon had already locked on to the monster that had reached the three mutations at the beginning, so close at a distance, it was impossible to dodge this attack, and when it was launched.

A red beam of light rushed out directly from the core of the core area, pointing directly at the monster that had reached the third mutation, and the monster let out an exclamation and was enveloped by this red beam.

Then a violent explosion sounded directly outside the core of the core area, not far away, even if the speed of these three mutated monsters was fast enough, it was still not comparable to the speed of the attack.

The monster let out a terrible roar at the same time, and then continued to retreat to the outside, and when it reached a certain distance, it began to cower and hover together, like an animal licking its wounds.

At the same time, he glanced at the core area with fear, and then let out a fierce roar, and the monster of 4 weeks began to become fanatical, attacking frantically.

The Chief of Staff didn't expect this kind of attack to kill the monster that had mutated three times, he just wanted to be able to injure it and make it fearful enough.

Because if this monster that has only reached three mutations still charges the base with other monsters, it will be difficult to hold even for an hour, let alone a night.

The first line of defense was broken through by monsters, and there was not even time to evacuate many weapons, which led to a shortage of weapons gathering.

Because the weapon they need is a weapon that can kill the secondary mutation, because compared to ordinary monsters, the secondary mutation poses the greatest threat to their position and defense.

Compared to ordinary monsters, they are nothing more than cannon fodder.

But even such a constant stream of attacking monsters will still put pressure on the defense line, because they must also be distracted to clean them up, otherwise it will still pose a great threat to the whole body.

On the second line of defense, because of the withdrawal of the three mutant monsters, he barely fell into a stalemate with the monsters, thus gaining valuable time for the deployment of the remaining defense lines.

Because of the destruction of the first line of defense, the gap between the second, third and fourth lines of defense is not very large, and the original plan they did was to suppress the monsters outside the first line of defense, and hold out until reinforcements arrive.

However, the participation of the three mutant monsters in the attack broke their plan, which led to the problem that they faced a lack of defensive weapons.

Although the No. 2 defense line can barely resist the monster's attack, this stalemate cannot last long, because all the weapons are in an overload state, there is no rotation, all the members of the defense line are all online, once the weapon enters the overload, then the No. 2 defense line will directly face the possibility of breakdown.

In order to be able to wait for the arrival of reinforcements, the chief of staff directly issued an order to merge the No. 3 and No. 4 defense lines into a final line of defense, and at the same time, after the defense line was deployed, all the doors of the No. 2 defense line were directly closed, and the gate power system could at least continue to operate normally.

The closure of all gates may allow time for a retreat, as well as the evacuation of some of the more critical weapons.

When the adjustment order was given, the upper part of the No. 2 defense line began to collapse sharply, and the upper part of the No. 1 defense line also began to collapse, forming extremely thick walls, and some attacking monsters were also crushed under these boulders, and with the blockade of the passage, the members of the defense line also began to carry out emergency evacuation.

However, some monsters broke into the safe area when these walls formed, causing a certain amount of confusion to the retreating personnel, and although they were eventually killed, it took a long time.

And those falling walls began to shake continuously, even if these monsters were suppressed, they would not die immediately, because these were not only ordinary monsters, but also monsters that had reached a mutation and a second mutation.

These monsters are not so easy to kill, otherwise they would not be carried out with those special weapons, killing monsters that have reached the second mutation.

At this time, one of the squads stayed behind to break off, and most of the members of Line 12 managed to evacuate, but the squads were overwhelmed by monsters.

As all the surviving members of Line 2 evacuated the load-bearing wall of Line 2, the only small area that had been completely broken began to collapse and flow out of it.

The complete closure of the load-bearing wall of Line 2 also made those monsters make a complete decision with Line 3, although these monsters have all kinds of corrosive acid, and it will not take long to clear the passage again, but at that time, the cleared passage will not allow many monsters to pass through at the same time. Take a hundred plating to read the latest chapter of "The Road to Survival in the Spirit Cage", the first time to read it for free.