Kingdom of Corrosion

As they spoke, gunfire rang out from the corner office, the flash of gunshots shining through the glass. The flickering light signified that not only were people inside, but they also had assault rifles and a large amount of ammunition.

Suddenly, a window opened, and a burly man appeared at the side. He held a strange gun and aimed it at a large billboard about twenty meters away, standing in the middle of an intersection. Pulling the trigger, the grappling hook shot out swiftly with a rope and pierced through the billboard screen, anchoring onto its metal frame.

The man tightened the rope, secured the gun, and pulled out a cord with a hook from his waist. He attached the hook onto the rope, jumped out of the window, and slid towards the billboard. Using a display mirror, Maya said, "Fortress agent, NPC."

Hearing it was a Fortress agent, Lin Wu, who had been watching the commotion, raised his gun. The second person stood on the windowsill, wielding a submachine gun and spraying bullets inside while attaching a hook onto the rope. Just as the NPC leapt from the windowsill, Lin Wu pulled the trigger, severing the rope attached to the hook. The Fortress agent fell from the second floor, instantly overwhelmed by the surrounding zombies.

Seconds later, a third person appeared at the window, and Maya said, "Player, Nightmare."

Everyone turned their attention to Nightmare, who frowned and said, "How did he get here? How did he get there?" Glancing out of the corner of her eye at Lin Wu, she saw him aiming his gun, waiting.

Noticing her glance, Lin Wu put away his gun, and Nightmare, feeling helpless, said, "Shoot him down."

Lin Wu asked, "What...?"

Nightmare interrupted, "I’ll give you a Heavy Weapon Skill Book."

"Do you have a dagger?"

"No."

Little Knife kicked Lin Wu’s shin, and an irritated Lin Wu thought to himself, "A knife to the head is proof enough of cunning, the ancients did not lie to me."