No matter what, we must first escape the shelter.

Chen Shanshan nodded, following Lin Feng's command, and then led the three women behind her, continuing to flee toward the distant exit on the minus third level.

She trusted in Lin Feng's interception abilities at the rear; if even Lin Feng couldn't handle the crisis of the monster tide behind them, then the entire squad... would perish here.

As the women left, Lin Feng glanced at Lisa and the Salvation Army squad standing behind her, then followed Zheng Yan Ying's steps, walking at the end of the team.

Even after reaching the minus third level, what awaited them was a long trek of twenty-five kilometers!

The only good news was that there were no Tier Three Pollution Sources on the upper three levels, and there was no need to worry about attacks from Tier Two Mutants, not even Tier One Mutants were numerous.

The group no longer needed to deliberately maintain a retreat formation, and their tense nerves could finally relax a bit.

After Lin Feng's squad left, the remaining Salvation Army support members looked at each other in dismay.

Until the captain saw the mutants in the stairwell behind them, slowly becoming restless due to the lack of firepower suppression. He hesitated for a few seconds, then ordered to follow Lin Feng's squad and evacuate the shelter ruins together.

The long 25-kilometer trek, longer than a half-marathon, fortunately, everyone were Evolvers, and without worrying about attacks from mutants on both sides, they dashed up to the minus second level in one breath.

Then, without stopping, they continued to charge forward.

Everyone harbored a pent-up urge, gritting their teeth and not giving up.

Fortunately, the further they went, though it got hotter, the environment was no longer as harsh as below, the murmurs in their ears and minds gradually dissipated, and there weren't as many bacterial slime and black fog nearby.

Upon entering the minus first level, the visibility improved slightly, turning from darkness to dimness, no longer like the previous minus fourth level...

Pitch black as ink, where one couldn't see their hand in front of them.

By now, everyone had sprinted for over twenty kilometers from the minus fourth level to the minus first level in one go.

Except for Lin Feng, others like Shen Yue and Ah Lian, even Zheng Yan Ying and Chen Shanshan, showed signs of exhaustion.

After all, wearing battle armor that weighs hundreds of kilograms, not being power armor and needing to be borne by oneself, plus the weapons and ammunition prepared in the backpack, and the thirty kilometers covered before the monster tide occurred, along with the exploration of the right pollution source on the minus fourth level...

A series of actions continually drained their strength.

Even someone as strong as Chen Shanshan and Zheng Yan Ying, Mid-Tier One Evolvers, couldn't withstand such intense combat.

This amounted to a 30-kilometer forced march, plus a 20-kilometer breakout fight, all while carrying heavy gear and maintaining constant concentration...

So upon reaching the minus first level, except for Lin Feng at Late Tier One, the remaining five were already overwhelmed.

Among them, Shen Yue was panting the hardest, holding a titanium alloy shield weighing several hundred kilograms, nearly a ton, along with the armor on her, she bore the heaviest load in the team.

Despite having Mid-Tier One strength, she was enduring a load ten times her weight, running the entire course...

If not for her unique Physique System digestion superpower providing a prolonged frenzy state, she would have collapsed halfway.

Apart from her, Ah Lian and Ah Ming were also nearing their physical limits, collapsing onto the ground, or lying down in fits of coughing, struggling to catch their breath.

At this moment, leaning on a warhammer, Zheng Yan Ying said to Lin Feng:

"We've already run over twenty kilometers; let's rest for a while. Even if there is a monster tide, there are very few that could reach here. Ordinary Tier One mutants, even Tier Two, pose a low threat to us."

"Let's rest for ten minutes before moving on."

Upon hearing this, all the women nodded in agreement.

Lin Feng frowned slightly, his concern wasn't about any Tier One or Tier Two Mutants, but rather the crisis targeting the Salvation Army's main force, which could very well be something stronger and more terrifying than Tier Two Mutants.

With this in mind, while calming his breath, Lin Feng looked back at the staircase entrance behind them where occasional explosions could be heard...

Slowly, he addressed everyone:

"According to our previous analysis and Pastor Zheng's introduction, the Salvation Army has at least two Tier Two Evolvers, one of whom is quite strong, at least Mid-Tier Two."

Upon hearing this, Zheng Yan Ying slowly realized, her flushed cheeks hidden under the mask, her expression changed.

Lin Feng continued:

"Think about it, what kind of enemy forces such a powerful second-tier Wanderer faction to use highly explosive ordnance?"

Zheng Yan Ying, standing aside, sighed softly:

"It could only be the Tier Three Mutants formed by Tier Three Pollution Sources on the shelter's bottom level..."

Lin Feng nodded:

"Currently facing Tier Two Mutants, as long as we react swiftly, we can use the Holy Water's Demon Special Attack effects to severely injure or eliminate them..."

"But once faced with Tier Three Mutants, even if they are far from true Tier Three Kings, if they possess even one-tenth of a King's power, they are something our Tier One squad cannot withstand."

Zheng Yan Ying nodded, lifting the warhammer she had leaned on and spoke slowly:

"Lin Feng is right, I didn't consider it fully. The enemy could very well be Tier Three Mutants, or Late Tier Two Corruptors, both of which we cannot deal with at the moment."

"Let's go, there's only five kilometers left, and a couple of minutes of rest should be enough."

Upon hearing the existence of Tier Three Mutants, the four women on the ground were instantly filled with fear. They had to suppress the aches and fatigue in their bodies, grit their teeth and force themselves to stand up, following the pace of Zheng Yan Ying and Lin Feng, continuing forward.

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