Countless attackers wearing gas masks poured in from all directions.

They were bare, emaciated, shouting and firing indiscriminately. These are the "undead" who inhabit the old city of Shanghai, and there is no doubt that they will brutally kill and plunder any outsider, if they can afford to provoke them.

However, Patrick didn't know if the attackers were still rational, and judging by their frantic shaking of their heads, they probably went crazy. He wanted to ask if the Crazy Collapse Particles would have an effect on the mind, but now was not the time.

Patrick pulled out a smoke grenade and handed it to G41, and together the two threw the smoke grenade out the window. Soon, the surroundings of the car were covered in smoke, and the attackers, who were afraid of accidentally injuring their own people, were obviously not as fierce as they had just been, and their firepower gradually weakened. Patrick uses the scan to mark the location of nearby enemies, and fights back at enemies in the smoke from inside the car, and the gangsters who are like headless flies quickly fall in large swaths.

Patrick came outside the car, unfolded the barrel of his gun, and sniped at the RPG from a high position, while the G41 was tasked with sweeping away the remaining enemies in the vicinity, temporarily repelling the enemy.

After killing all the attackers with RPGs, Patrick returns to the car. The enemy is in disarray and has not yet regrouped, and this is the best time for them to escape.

"Two, keep your head down, go this way. Patrick tapped the car door and shouted.

"Who are they?" asked Bowman, looking annoyed.

"I don't know, I've never heard of people living near North Lan. Vihel said with a shudder.

"Doctor, we should go!" Patrick reminded again.

That's when the two researchers set out. They began to move towards the nearest building, with G41 leading the way and Patrick behind the hall to intercept the attacking attackers.

The shouts rang out again. Patrick hated the screams of his attackers, which were just their self-defeating wails. He fired three shots from his pistol, killing three approaching enemies and breaking their masks. He then threw a grenade, which leapt into the air and emitted a dazzling glow, then unleashed a shockwave and ball of fire that shredded the approaching attackers.

The enemy did not rest on his laurels, and the attackers in the distance continued to shoot and scream wildly. Bullets were scattered everywhere, and they had to quickly hide inside the building.

"Bowman!" exclaimed Dr. Vehler, and Patrick looked back to find Bowman, who had fallen behind the group, shot and fallen to the ground, lying headlong in the dust.

"Don't go over, it's too dangerous. Patrick grabbed Vihel and dragged him inside.

He didn't know how Bowman got to the back, but he had a hole in his back, and he was already a dead man, and that was the truth.

The rest of the three of them went upstairs and hid in a living room. Vihel sat down against the closet, breathing heavily.

"It's safe for now. Patrick put away his rifle, swapped into his pistol, and prepared for close-quarters firefights.

"What's wrong, Doctor?" asked G41.

"I, I, I ......" Vihel looked out of breath, "Alas, everyone is ......"

Patrick understood how he felt, and his mind must be a mess right now. Death is a common occurrence for Patrick, and he knows that only by continuing to walk can he have a chance of survival.

"I'm sorry, doctor, there's nothing we can do. ”

"No, I didn't blame you...... "Vihel said to the G41, "I just ...... Alas......"

There was a heavy stamping sound on the stairs, which seemed to be deliberately made by the attackers. Patrick scanned and spotted three enemies walking up with a big grin.

He loaded his pistol and quietly moved to the door.

"What's wrong?" asked Vihel.

"Someone came, keep quiet. ”

"Get out of here! stop hideing!" the attacker on the stairs suddenly shouted, banging frantically on the iron railing, "We know you're here!"

Patrick knew full well that their noisy behavior was emboldening them, and they were afraid of hunters hiding in the shadows. The exaggerated gestures of these miscellaneous people are a sign of their timidity. Well, let them die in fear.

The attackers came up muttering to each other.

"G41, protect the good doctor, I'll fix these half-naked. ”

"Yes. ”

After a brief discussion at the top of the staircase, the three attackers separated, and one of them walked in the direction where they were. The attacker, armed with an assault rifle, turned to the first room. The sudden burst of gunfire behind him startled him, and then he turned back to his companion and yelled at him.

Is it just a bluff...... Patrick loaded the pistol, held it in his left hand, and his free right hand was eager to try. The moment the attacker reached the door, he turned and went out, striking out with his right hand, clamping his target's neck, before deploying his Hidden Blade and slitting the enemy's throat.

The attacker struggled without struggling, but his body stiffened and softened. Patrick pulled hard and threw the body back into the room. Blood flowed out of the only wound, forming a puddle.

Patrick took advantage of the fact that the other two assailants had not yet turned back, and quickly ran in their direction, diagonally through the hallway, and behind the protruding pillars. By the time the two attackers turned back to find their companion missing, Patrick was ready to wait.

The target first screamed, then began to curse, cautiously approaching with a loud noise. Patrick turned on the optical camouflage and waited, everything was going according to the script he had in mind, he just had to be patient.

The enemy took one last look at each other, and one after the other raised their guns and walked this way. Patrick remained motionless, letting go of the attacker who was walking in front, his fingers quietly adjusting the silencer of the pistol. When the second assailant appeared in front of him, Patrick unleashed his Hidden Blade and stabbed the target between the neck and shoulder, pushing them away after completing the assassination, raising his left hand and pulling the trigger, opening a large hole in the last assailant's head, and a mixture of brains and blood covered the hallway floor.

It looked like it was all settled, and Patrick breathed a sigh of relief. Of course, there are still a dozen outside, but there is no need to worry yet, they should be able to avoid the attackers by finding another way out.

"Warning, an increase in the concentration of collapsed particles in the environment has been detected, and dangerous values are about to be reached. Patrick hears an alert from the AED system, "Neutralization protection is enabled, please take appropriate precautions." ”

The radiation index rose like never before, and Patrick had to put on his filter.

"The concentration has risen to the threshold for inducing ED infection," says Mad Madness, "and it continues to rise." ”

"Why is this happening?"

"The cause is unknown for the time being, but the direct cause of the increase in concentration should be the deposition of the collapse cloud, which is inseparable from the ash. ”

Patrick hurried back to the room where they were hiding, and as he expected, Dr. Viheler was showing acute symptoms of ED infection. G41 was reassuring the patchy old man, hoping it would make him feel better.

"Doctor......" Patrick's words were even more dull due to the filter.

"Hehehe...... Vihel was completely relieved, "it's not bad, mercenary, you're prepared." ”

"The mercenaries are just a façade, Doctor," Patrick couldn't hide anything anymore, "we're here to investigate the ruins of Northern Land." ”

"I know, I know...... Ahem......" Vihel coughed twice, "just look at the way you look." ”

"Luo Lian and Nanlian are both eyeing Beilan Island, and the Antarctic agents are in the investigation team, but they should have been killed in the attack just now. ”

"Well, it doesn't matter anymore. Go look into it, Mr. Patrick. The doctor shook his head.

"Of course. ”

Patrick silently raised his pistol, aiming it at Vihler's eyebrows, who closed his eyes knowingly.

"May you rest in peace. ”