The situation of the battle is becoming more and more unfavorable for the guards, which undoubtedly means that time is running out.

The destruction of the tank armor driven by Lafayette was the beginning of the demon's onslaught, which meant that the onslaught guards facing the demons could no longer parry.

Soon after that, Karyus's tank armor was also destroyed by the demons, and it was destroyed even more completely, the entire armor was completely smashed after being surrounded by five or six horned demons, if it wasn't for Sandro dragging Karyus out of the cockpit from the air at a critical moment, he would probably have been smashed into a pulp directly with the armor, and with the destruction of the two tank armors one after another, the entire guard team also collapsed.

Now, the institute has been completely surrounded, and the guards have been completely surrounded by demons, in this case, Monte, as the commander, immediately issued an order, so that all the crews of the unloaded floating ships were gathered on a floating ship, so that this floating ship could take off, and the remaining floating ships were left on the ground as an obstacle, and at the same time, the guards began to shrink towards the research institute, and everyone defended on the basis of the research institute.

As a result, the few floating ships left outside suffered, and when the guards gradually shrank around the institute, these floating ships directly faced the demons, so Ken was about to be smashed by the demons.

However, it is precisely thanks to this that the guards get some respite, after all, there are floating ships parked outside, although they are not battleships, but each one is dozens of meters long, even if the demon wants to destroy these floating ships, it will take time, and these times are just enough for the guards to adjust.

It's just that everyone knows that even if the guards are given more time to adjust, they will not be able to win this battle, after all, there are so many demons out there that even if they risk their lives, they will not be able to win at all.

It has to be said that this obvious result greatly damaged the morale of the guards, and many soldiers were already desperate at this moment.

But just then, Rocky is back!

Just as the guards were reorganizing their formation with their backs to the institute to resist the onslaught of the demons, Rocky's figure suddenly flew over the heads of the hordes of demons, and then landed in the front row of the guards.

"Monte! lead everyone to retreat, retreat underground!"

With a scythe sweeping sweep of the demons in front of the guards, Rocky shouted to Monte over the communicator.

"Understood!"

Hearing this, Monte, who was also fighting in the front row, looked at Lin Feng: "Lin Feng, let the long-range troops go first!"

"Got it!"

As soon as he agreed, Lin Feng immediately flew to the second floor, and after rushing in through the window on the second floor, he immediately organized the archer troops to retreat.

Under his leadership, the archers who had been placed on the second floor, the third floor, and even the top of the building immediately began to move, and soon moved to the first floor, and then went down to the basement through the spiral staircase on the first floor.

And when all the archers' troops were transferred, the guards in charge of frontal battles also began to retreat in batches.

The first to be sent to the basement were the wounded in the battle, then the soldiers in the back row, and when most of the guards were withdrawn, the remaining guards were led by Monte, fighting and retreating under the protection of other Sky Demon warriors, and soon advanced into the gate of the institute.

But don't forget, there is only one staircase leading from the hall on the first floor to the underground, and it takes a lot of time for hundreds of guards to go down the stairs, but the demons outside obviously won't give them this opportunity, so Rocky, Lilia, and the other Sky Demon warriors then relied on their bodies to block the door of the research institute, struggling to stop the demons from rushing in.

Fortunately, fortunately, the soldiers of the guards are each well-trained, so that they are not chaotic even in this crisis moment, you must know that at this time, the more chaotic the retreat, the slower, and the more orderly the speed, of course, it is not easy to do this, after all, in this moment of life and death, everyone's psychological endurance is different, not to mention that it is possible to be trapped and collapse, but the soldiers of the guards have done it.

Under the command of each squad leader, the last group of guards who retreated into the hall retreated down the stairs in an orderly manner, and the whole process took a very short time, which undoubtedly greatly reduced the pressure on Rocky and others who were guarding the door.

"My lord, everybody's down!"

Rocky, who was fighting, soon heard Monte's voice from the communicator, and as soon as he heard this, he immediately said to Lilia and the others on the side: "Everyone retreat, go to the air!"

With his order, whether it was him, Lilia and the others around him, or the other three squads who were still sticking outside, they all rushed straight into the sky, completely giving up the defense of the research institute.

Not only that, but when Rocky led the group back into the air, he immediately contacted Karina.

"Karina, bomb the Institute!"

"Understood. ”

Hearing Rocky's words, Karina, who was in charge of commanding the fleet, ordered the fleet to start adjusting its formation without saying a word, and at the same time turned the gun muzzle.

And in the process, hundreds of surrounding demons instantly poured into the inside of the research institute, and the demons at the main gate rushed directly into the gate, and the tall horned demon didn't even need to move, just hit the wall next to the gate with his body and shattered it.

At the same time, due to the absence of the other three teams, the outer ones also began to attack the research institute from other directions, the horned demon was frantically ramming the wall of the research institute, the already rotten wall immediately cracked in the violent impact, and the smaller and more flexible black-eyed demon quickly lay on the wall like a gecko, and then was buried in the ruins along with the collapsed wall under the impact of the horned demon.

Destruction.

Completely reckless, or purposeless destruction, when the guards retreated underground, and Rocky and the others also retreated into the air, countless demons began to completely destroy the institute.

However, just as these demons did their best to destroy the research institute, the fleet in mid-air adjusted its formation, and then began to bomb the entire research institute without even a minute of pause!

The rumbling sound of artillery bombardment came again, but this time the target became the research institute itself, and in this series of shelling, the research institute that was already about to be demolished by the demons collapsed, and countless demons who rushed into it were instantly crushed in the ruins and drowned in the smoke of the magic cannon.

After a while, the sound of the cannon stopped, and the smoke of gunpowder dissipated, and by the time Rocky and the others in the air looked to the ground again, the research institute was completely out of sight, and the research institute that was still standing on the ground had been reduced to ruins, and the whole city was integrated.

"Rocky, Guards......"

Looking at the research room in ruins, Lilia couldn't help but look at Rocky, and couldn't help but ask worriedly, and everyone else was the same.

"Rest assured, the teacher has already activated the mobile fortress!"