21 Killing The Experiment Subject Grimm sat in the elevator and pressed the button for the fourth floor. A few seconds later, the elevator stopped. At this time, Grimm had already set up the heavy fire G

Grimm sat in the elevator and pressed the button for the fourth floor.

A few seconds later, the elevator stopped. At this time, Grimm had already set up the heavy fire Gatlin.

As the elevator door slowly opened, a notification popped up.

[ Warning: Dangerous gas present! ]

"Dangerous gas?"

When Grimm came here the first time, he did not receive such a notification. Could it be that the corroded experiment subject 0831's body released poisonous gas?

Just as Grimm thought of this, he suddenly heard an angry roar.

In the next moment, he saw a giant with a distorted appearance suddenly rushing over. The surface of its body had already rotted. A lot of black liquid flowed out between the rotten flesh and skin.

"As expected, he's still alive!"

Grimm didn't hesitate at all. He pulled the trigger of the heavy firepower Gatlin. In an instant, bullets poured out.

"Da da da da da da da..."

Flames sprayed out from the barrel of the gun. The experimental subject was suddenly attacked and its body was hit by dozens of bullets in an instant.

However, something that Grimm could not imagine happened.

The bullets penetrated the experimental subject's skin and flesh and instantly made countless holes on his body. However, this guy only screamed in pain a few times and quickly recovered his fighting strength.

The experimental subject suddenly rushed to Grimm's side and swung his heavy fist at him.

Grimm shot while rolling and took advantage of the opportunity to rush behind the experimental subject and enter the inner part of the fourth floor.

But when he turned around to look at the experimental subject that had missed the charge, he was suddenly stunned.

"This guy..."

He clearly saw that there was nothing abnormal with the experimental subject's back, except for some corroded wounds. In other words, the bullet he had just fired didn't actually penetrate through the experimental subject.

This was a heavy firepower Gatlin's. Even if a steel plate was hit, it would definitely be completely penetrated at such a close distance. But this guy was actually fine!

Amidst his shock, Grimm saw that the subject immediately turned around. As soon as he turned around, that huge fist was exposed.

Just now, Grimm had shot at least a dozen bullets into the subject's arm, but its arm was still able to attack freely. Moreover, the skin and flesh on the surface of the arm had actually peeled off.

What was now exposed on the experimental subject's arm was white bones. However, the bone was obviously different from that of a normal human. It was thicker and stronger. Moreover, there were fine bone fragments connected to the joints.

The outer skin and flesh of the experimental subject could only be considered as an accessory on his body.

The muscles that were actually exerting force were actually hidden under this white bone.

Grimm had never seen such a mutated human before. His expression was somewhat absent-minded. However, in the next moment, the experimental subject delivered a heavy punch towards him.

Bang!

Grimm's entire body was sent flying. The mechanical exoskeleton in his left arm instantly malfunctioned.

[ Warning: The disintegrator exoskeleton body is damaged. Urgent repair is required! ]

[ Warning: The outer protection of the spacesuit is damaged. Urgent repair is required! ]

Grimm suddenly became alert.

One had to know that it was still fine if the exoskeleton of the body was damaged. Once the spacesuit was seriously damaged, he would definitely die if he was exposed to this environment that was filled with poisonous gas.

"Switch to a rifle!"

The opponent's bones were too hard. It seemed that normal machine gun bullets would not be able to cause any damage to him. In that case, let's try the delayed explosion of the rifle now.

The delayed explosion of this thing could cause more damage. Moreover, the weight of the rifle was lighter, so he could use it for defense more easily.

Grimm had just changed to the rifle and pulled the trigger.

Bang!

In an instant, the pellets was released.

More than ten shells were embedded in the chest of the experimental subject. A second later, the pellets suddenly exploded.

Bang!

At the same time of the explosion, Grimm saw that the flesh on the chest of the experimental subject was blasted away, revealing the neatly arranged bones that looked like a breastplate.

"Oh my God!"

Grimm was speechless. This thing almost had no weaknesses.

Boom Boom Boom Boom Boom!

Grimm fired five consecutive shots. The bone fragments on the chest of the experimental subject were shaken by the explosions time and time again, and finally some cracks appeared.

But this degree of toughness had already greatly shocked Grimm.

If it was the large-mouthed eyeless beast, the rifle in his hand would definitely kill one with one shot at a time. But this experimental subject actually had such a powerful defense.

"Looks like I can only use high explosive grenades!"

Grimm had obtained five high explosive grenades when he entered this ruin. He originally didn't want to use these things lightly, but looking at the power of this test subject, if he still didn't use them, he was afraid that his life would be over.

He jumped behind abruptly and dodged the test subject's heavy punch. Almost at the same time, he threw a high explosive grenade at the test subject's feet. Then he immediately squatted down and used the cover here to block the damage caused by the explosion.

Boom.

The grenade exploded with a loud bang.

However, when Grimm raised his head to look at the subject, he found that a high-explosive grenade had only caused a few cracks on the bone of the subject's right leg.

As black liquid flowed out bit by bit, the cracks on the bone had actually begun to heal.

Looking at the chest of the subject again, Grimm was stunned.

The bone fragment that had previously cracked on the chest had now completely healed.

This kind of healing ability was simply too abnormal.

"I can't let him heal!"

Grimm immediately pulled the trigger and aimed at the experimental subject's injured right leg and fired repeatedly.

Boom Boom Boom Boom Boom!

The sound of explosions came one after another.

The leg bone that was just about to heal suddenly cracked even more.

The experimental subject endured the intense pain and rushed toward Grimm.

But Grimm had already found the trick.

He simply took out two rifles and held one tightly in one hand, frantically dodging the opponent's attack. As long as he had the opportunity, he aimed at the experimental subject's right leg and fired.

Finally, after more than a dozen rounds of scattered bullets exploding, a huge wound appeared on the experimental subject's right leg.

Grimm took the opportunity to predict the position and threw another grenade.

Boom!

With a loud sound, the experimental subject's right leg was completely broken.

The huge body fell to the ground. Grimm turned around and fired five or six shots at the experimental subject's wound.

Boom Boom Boom..

Without the protection of the bones, the internal flesh and blood were completely destroyed by the damage caused by the explosion of the bullets.

The experimental subject let out a painful roar, but it was already difficult for him to stand up.

Grimm changed to Gatlin, pulled the trigger, and fired at the wound.

Da Da Da Da Da..

The experimental subject's skeleton was shattered by Grimm from the inside. Under the fierce impact of the bullet, the entire waist of the experimental subject was turned into a pile of fragments.

Finally, the experimental subject stopped moving and was completely dead.

Grimm panted heavily. Although the exoskeleton of his body had helped him conserve his physical strength, this experience still made him feel very tired.

He wanted to sit down and drink some water, but the problem was that the place was now scattered with poison gas. He could not take off the spacesuit mask.