The staircase chosen by Su is an emergency passage, and after decades, the emergency lights on the walls are still emitting dim light, fully demonstrating the excellence of military quality.

After rushing into the passage, Su jumped up and slammed his body straight into the opposite wall! But in mid-air, he reached out for the handrail of the stairs, and a turning point appeared at the doorway to the second basement floor. He pressed his hands on the heavy fire door, almost his whole body against the door, and then suddenly exerted force, and with a boom, the fire door broke away from the door frame and flew far backwards. And Su had already flashed into the second basement floor at the moment when the fire door was shaken, and his speed was quickly increased to the extreme, rushing towards the predetermined goal.

Speed and time difference have always been the means to defeat the enemy, and not everyone has the panorama as much as he does. This almost means that only Sue can sneak attack others, and others can't imagine that they can sneak attack him. Although the meat tubes and flesh membranes scattered throughout the research base are also equivalent to an extension of alien perception, not to mention that Su also has the ability to stealth, even the delay in the transmission of information from the biological matrix is deadly enough.

Behind Sue, Medirri also flashed from the staircase, following closely. Her figure is clear and constant, her movements are smooth and natural, unlike Su, who pulls out an afterimage with every movement. The girl refracted between the ground, walls, and ceiling, and every movement was flawless, making the most of the terrain and inertia without wasting a single ounce of power. Although Sue's ability in speed was a full two orders higher than hers, Medirri didn't lag far behind.

In the second underground floor, there are not only ferocious xenomorphic beasts, but also more than a dozen wandering humanoid creatures. They are apparently the same group of researchers who have survived by the virus, and can be said to have nothing to do with humans except for a humanoid body. Their organs, their body structures, and their way of thinking and moving have been completely transformed into a different species, one that has never existed on Earth before.

They had already known about Sue and Medirri's assault through guò's ubiquitous meat tubes and membranes, so they converged from all directions. The intelligence of these researchers who have completely turned into alien species is obviously much higher than that of xenobiological beasts, some pursue from behind, some attack from the side, and some intercept from the front, and there is obviously a tacit cooperation. And judging from the speed of their breakthrough and the energy light emitted from their bodies, these xenos all have a strength that surpasses that of xenomorphic beasts, and they are already close to ordinary sixth-order warriors.

But both the Xenobiotic and the Xenomorph had clearly misjudged the speed of Sue and Medirli. Before the encirclement was closed, the two men had swept out of the encirclement like the wind.

Su's figure suddenly became clear, and the whole person was attached to a security door. Behind the door is Hasbeyl and the General. The access control system of the security door is still working, and Sue certainly doesn't have the ability to crack it. However, after the figure was frozen for half a second, the internal structure of Su's body had been fine-tuned, and then a terrifying power that was not inferior to the eighth order burst out from his body, and with a loud bang, the security door was completely shaken away, carrying a strong wind, and smashed towards the center of the real room!

Sue's face surged back a few steps, leaning against the wall of the passage, unable to move. The power that instantly stimulated beyond the limit of his own ability and the huge shock force brought a lot of damage to his body, and now there were countless subtle damages in Su's body, and countless blood vessels had burst. The feeling of weakness and paralysis had spread to his whole body, and Su had lost his combat effectiveness for a while, and it was estimated that it would take another 2 seconds to regain his basic combat ability.

The heavy alloy security door slammed down, and there was a dense sound of metal bending and breaking in the room, as well as the sound of blisters being squeezed, and a roar of pain. The real room, which is several hundred square meters, is already a mess, and the security door is smashed right on the meat quality control platform, smashing it open in the center. The lower half of Hasbele's body was pressed under the alloy door, and the intense pain caused his body to writhe wildly, pushing hard against the alloy door.

At the moment when Su Zhen opened the alloy door, Medirli had already flashed into the real room, standing upright on the alloy door, looking around to observe the surrounding environment.

The girl's attitude was calm, but the alloy door slammed downward, and Hasbele, who was pressed underneath, screamed even louder. After the third transformation, with the improvement of her ability, Medirri's body structure is constantly changing, although there is no change in her physical appearance, but in fact the weight has exceeded two hundred kilograms, plus the hundred-kilogram heavy sword and more than one hundred kilograms of armor on her body, the girl actually has half a ton. If you make such a stop on the alloy gate with high speed, not to mention Hasbelle, even the xenobiotic beast with an exoskeleton will be completely flattened.

As soon as Medirli stood up, a light breeze rose in the room. She suddenly changed her position, lifted her heavy sword, and blocked her side!

With a muffled sound, the heavy sword suddenly bent, and Medirli was bounced out like a cannonball, smashing into the wall of the real room! In Medirri's original position, a looming fist appeared, and then disappeared.

Medirli curled up in a ball and shot at the wall, and at the moment of impact, her body suddenly stretched out and turned into a crouching position against the wall. The tremendous force and inertia made her feel as if she was glued to the vertical wall, but under her feet, the radial cracks spread out in all directions, and the whole wall was groaning and collapsing.

A soft "Huh!" sounded in the room. The stealthy general seemed surprised by Medirli's strain. In its judgment, Medirri should have crashed through the wall and was seriously injured. How could this girl, whose physical strength was only equivalent to that of a mature xenomorphic beast, be able to block her full blow?

Medirri had just stopped on the wall when her beautiful blue eyes narrowed again. Although she couldn't see the enemy, she could sense the tremendous energy of the attack. She stretched out her left arm and met the incoming energy with her armour! At the moment of the exchange, in the huge energy storm that burst out, an arm was finally revealed! Medirri's left arm stepped back, unloading the turbulence of energy from the onslaught and grabbing it with a backhand. Then the girl immediately rushed forward, and almost the whole person crashed into the arms of the invisible enemy, and the next moment, this almost completely invisible enemy had been flown out by the Medir Lilun, and it was only after crashing into two walls in succession that it stopped.

Although she couldn't see the other party, from the fluctuation of energy, Medirri knew that her attack still caused slight damage to the other party. There was a slight smile on her lips. The enemy that can be invisible in front of him has a strength close to the ninth order, as well as not weak defense and speed, plus the ability to be completely invisible, it can be said that the combat power is far beyond that of the ordinary ninth-order ability, and even theoretically will not lose to Pandora, who has the strength of the tenth order. However, Pandora's body has an almost indestructible perverted defense, and when it comes to combat effectiveness, it is certainly not comparable to this invisible guy.

Due to the large difference in ability ranks, if she continues to fight, Medirli will still lose, but she is not fighting alone, and Sue, Sue will recover soon.

Just as a smile welled up on Medirri's lips, the Invisible General had rushed in front of her again, and Medirri met her again with her left arm. The battle began and ended in the same way, and the general was thrown out again, this time smashing not only two walls, but also several rows of shelves for real instrument materials. However, Medirli was just about to pursue when a chill suddenly came over her heart! Before she could react, her back was as if she had been hit by a giant hammer, and her eyes couldn't help but go black! Then a sharp sensation broke through her back and out of her chest!

Medirli coughed lightly, coughing up a mist of blood. She looked down at her chest, and from there came a fist-thick tentacle with the tip swinging viciously. The tip of this tentacle is covered in layers of scales, each edge is extremely sharp, and the edge is stained with her blood! It was this tentacle that suddenly struck from behind and pierced Medirli!

Medirli's face suddenly turned pale, and with the wave of her tentacles, her whole body was lifted in the air!

With a bang, a dull gunshot suddenly rang out in the real room, and the tentacles that passed through Medirri's body suddenly splattered with a large canopy of blue blood, and a deep hole was punched.

Su stood at the door of the room, his hands were as steady as a rock, the muzzle of the gun was constantly spewing tongues of fire, and all twenty rounds of ammunition in the magazine poured out, and the violent explosion and shock wave not only tore apart the hard flesh and blood of the tentacles, but also shocked Medirri, who was close at hand, his face pale, and blood continued to ooze from his mouth and nose. Su hardened his heart, the blue light in his left eye was extremely cold, and with a slight movement of his right hand, the empty magazine had fallen, and the new magazine was reloaded, and then there was a storm of 20 rounds in burst!

In the continuous explosion, the tentacles were finally interrupted by volleys, and a soft moan of pain sounded in the real room.

This pistol, which incorporates the most advanced weapons technology of the Dark Dragoon, has a rate of fire of 1,500 rounds per minute in addition to various special ammunition, which is completely a slaughter machine at close range! It's just that if you want to exert the full power of this gun, you must have at least sixth-order strength and fifth-order defense, otherwise if you enable the highest rate of fire burst, the recoil will directly shatter the wrist of the gun wielder.

Sue caught Medirri's body, stepped back to the wall, dropped the pistol that had no ammunition, and instead pulled out the short knife that followed the shot, and her blue eyes were fixed on the figure that was gradually emerging at the other end of the room.

It was a young girl, her blue skin shining with a metallic sheen that looked mysterious and eerie, but her beautiful face could still be seen. She is not wearing clothes, but forms a cuticle on the surface of her body that resembles an armor. The light on the creature's armor flickered, and her figure loomed. It seems that these rays of light are the key to her invisibility. There is a striking totem on the girl's chest, which is a heart that is dripping blood. Behind her, there were six long tentacles waving slowly in the air, but one of them had been cut off in half, and the flesh on the wound was constantly wriggling and regenerating, it seemed that it could grow in a few minutes, but it would take at least an hour to fully recover.