Chapter 152 [Engineering] Bonds, Gate Upgrade!

Inside Dormitory 404 on the 4th floor, the atmosphere was oppressive to the extreme.

“An Lan!” Jiang Yuwan shouted sharply.

An Lan didn't hesitate for a moment. Taking advantage of the turret's firepower killing the most powerful batch of zombies and creating a brief gap in the suppression of the others,

She suddenly yanked open the Dormitory door, quickly placed the [Hunting Trap] on the ground at the entrance, and immediately turned to retreat!

The entire movement was as smooth as flowing water, fast to the extreme!

However, just as she retreated into the Dormitory and was about to close the door!

“Roar—!”

One of the strongest Level 3 Zombies suddenly lunged out from the zombie tide,

Its body forcibly shoved aside other zombies, and an arm covered in black veins and sharp claws brazenly thrust into the door gap!

“Bang!”

The heavy thorn vine door was stuck tight by this arm, unable to close!

“Quick! Come help!” Jiang Yuwan's expression changed drastically as she was the first to rush forward, using her body to desperately brace against the door panel.

Qiao Yunge used the turret attacks to maintain suppression, while Su Meier and Li Xinran immediately lent a hand. Qiao Fei and Qing Ya also ignored their fear, rushing over to help push the door together.

That Level 3 Zombie's strength was terrifying. The muscles on its arm were knotted and veins bulged, as it held out against the combined strength of several women, refusing to let the door close.

It even reached its other hand through the gap, sharp nails flailing wildly in the air.

An Lan reacted extremely quickly. The watermelon knife in her hand swung down without hesitation, hacking fiercely at that arm!

“Clang!”

A crisp sound of metal clashing against iron rang out!

The blade cut into the arm but was stuck by the hard bone!

“Damn it!”

An Lan's eyes sharpened. Instead of choosing to pull the knife out, she raised a foot!

With one foot, she stomped hard on the zombie's wrist, pinning its arm firmly between the door frame and the wall!

Then, she resolutely pulled another spare dagger from her backpack and hacked frantically at the arm joint, over and over!

“Puchi!”

“Puchi!”

Black blood splattered everywhere, covering her face.

She seemed not to feel it, merely repeating the hacking motion mechanically and efficiently.

Finally, with a tooth-aching sound of bone cracking, she forcibly severed that arm!

“Roar—!”

The moment the arm fell, An Lan kicked the door panel directly!

“Boom—!” The door finally slammed shut heavily.

“Quick! Repair it!” Jiang Yuwan shouted immediately.

Su Meier and Li Xinran hurriedly pressed the pre-prepared Wood material and Iron Material against the door, and the door's durability began to slowly recover.

An Lan immediately returned to her position, re-operating her turret to pour out firepower at the outside.

However, before they could breathe a sigh of relief,

Thump...

Thump... Thump...

A heavy sound of footsteps like war drums approached from afar, clearly drowning out the roars of all the other zombies.

Finally, those footsteps stopped at the entrance of Dormitory 404.

Seeing the LV5 Zombie on the surveillance screen, the women in the Dormitory instantly held their breath.

An unprecedented, terrifying pressure shrouded their hearts.

It's here!

That LV5 General-grade Zombie!

It had actually come straight for Dormitory 404!

“Attack!” Jiang Yuwan's voice carried a hint of trembling.

An Lan and Qiao Yunge immediately turned their turret muzzles and fired frantically at the door.

Swoosh! Swoosh!

Bolts from the serial crossbow box and Heavy Crossbow Turret poured out as if they cost nothing.

Outside, a series of "ding-ding-dang-dang" metal clashing sounds immediately rang out, followed by the angry roar of that LV5 Zombie.

Immediately after, the Hunting Trap An Lan had just placed at the entrance was also triggered, dealing continuous damage to it.

“Roar!!!”

Amidst the angry roar, there was a hint of pain.

It was seen retreating into the distance.

As soon as the words fell, the sound of the door being struck from outside became more than ten times more violent than before!

Countless zombies, as if having received an order, flooded in from all directions.

They abandoned attacking other dormitories and began to assault the door of 404 at any cost!

The thorn vine door's damage reflection effect triggered continuously, and the turrets fired without pause.

Consequently, the zombies at the entrance died batch after batch.

But subsequent zombies immediately filled the gaps, unafraid of death!

[thorn vine door · Durability: 213/300]

[thorn vine door · Durability: 201/300]

[thorn vine door · Durability: 189/300]

The durability was falling frantically at a rate visible to the naked eye!

Every second, it dropped by over a dozen points!

“Materials! Quick!” Su Meier's voice was tinged with anxiety.

“Damn it! This thing is commanding them!” Qiao Yunge cursed through gritted teeth while firing frantically.

Li Xinran's proud expression looked a bit ugly, but she continued the repairs without saying a word...

...

On the other side.

Inside the Zombie Tide Maze.

Su Ze's figure moved like a ghost, his long spear taking the lives of one or more zombies with every thrust.

He trailed far behind that fleeing LV5 Zombie, neither rushed nor slow.

This simple and crude way of breaking through, and the way he solved countless zombies with such ease, made the expressions of the several mysterious figures observing in secret turn increasingly ugly.

“How can this player still have such abundant Stamina after so long?!” The tall fellow's eyes flickered with shock and suspicion.

The skeletal figure suddenly stood up.

“No! This human doesn't conform to common sense at all! His growth speed is too terrifying. Letting him continue to grow poses too great a threat; we must kill him this time!”

“Wait, you don't mean to...”

“Yes, that's right. Even if I risk being suppressed by the rules, I will personally take the field!”

“Be careful,” the stunning woman reminded him.

“Don't worry, as long as my speed is fast enough, I can solve him before the rules are triggered!”

As the words fell, the skeletal figure turned into a wisp of black smoke and disappeared from the spot...

The remaining three figures were somewhat silent.

Meanwhile, on the other side, while continuing his pursuit, Su Ze spared a glance at the situation in the Dormitory building.

When he saw that the door of Dormitory 404 was being besieged by a LV5 General-grade Zombie leading a zombie tide, and the durability was plummeting, his brow instantly furrowed.

Without hesitation, with a thought,

Bond effect—[Engineering], activate!

[Ding! Please select the architectural facility to be upgraded?]

Su Ze's gaze fell on the virtual icon of the Heavy Crossbow Turret that An Lan was operating.

It's you!

[Ding! 'thorn vine door' selected. Please select upgrade direction: Level/Quality?]

“Quality!”

...

Just then—

Buzz!

The scarred thorn vine door in front of them erupted with a Burst of dazzling blue light without any warning!

The light was so intense that everyone subconsciously closed their eyes.

Following that, a sound of metal grinding and rock squeezing was heard.

When the light dissipated and the women opened their eyes again, they were all stunned in place.

The original thorn vine door had disappeared.

In its place was a terrifying giant door cast from a mixture of dull metal and hard obsidian, its surface covered in sharp spikes!

A brand new system panel floated before their eyes.

[Rare Grade · Ironshredder Stone-Thorn Gate]

[Level: 5]

[Quality: Rare]

[Defense: 250]

[Durability: 500/500]

[Special Effect 1: 'Stone-Thorn Reflection' — When this door receives a melee physical attack, it will reflect 25% of the damage back to the attacker.]

[Special Effect 2: 'Indestructible' — This door is immune to corrosion, fire, and other special damages of fine quality and below.]

[Upgrade Path: ...]

Looking at this brand new door and its perverted attributes, Jiang Yuwan's breathing stopped for a moment.

“This... what is going on?!”