[Welcome to the challenge dungeon: Aliens vs. Predator. ]

[Challenge requirements: Kill 10 of any aliens to get a bronze treasure chest. Kill 50 to get a silver treasure chest. Kill the Alien Queen to get a gold treasure chest. ]

[This dungeon has a 50% chance of getting advanced items, a 20% chance of getting purple weapons, and a 1% chance of getting legendary items. ]

[Challenge dungeon strength: intermediate. ]

[Challenge time: 6 hours. ]

[The challenge cannot be forced to exit, and the portal will automatically open after 6 hours. ]

As soon as he entered the challenge dungeon, Mu Xing heard a prompt from the survival system.

Then

Ye Fei and Ye Ling followed and teleported to the challenge dungeon.

What came into view was an ancient underground ruins passage, and the door behind him was sealed.

Mu Xing recalled the plot of Aliens vs. Predator.

Probably the satellite searching for minerals detected a mysterious underground heat source in Area 14 of Antarctica.

A team of explorers rushed to Antarctica to explore and found an ancient ruin under the thick ice, but they never thought that this was a trial set by the Iron Warriors to temper their people.

What awaited these explorers were the terrible aliens imprisoned in the ruins and the dangerous Iron Hunters.

Because Mu Xing and his friends were not here to survive, they did not need to know the specific plot content and just focused on completing the challenge.

Ye Fei took out an electromagnetic rifle and put on infrared night vision goggles.

Ye Ling next to him rotated two crystal blades in his hands and even changed into tight combat clothes.

"Are you of Catwoman bloodline?" Mu Xing wanted to ask last time.

"That's right, it's Catwoman's bloodline plus superpowers. Now my brother and I are one close and one far away. Of course, if necessary, my brother will become a tyrant to take damage, and I will output from the back."

Mu Xing looked at Ye Fei: "Good boy, you have made progress."

Ye Fei scratched his head: "Brother, although I don't have any special skills in mental control, I have learned close combat skills well now. Although I am not very proficient in the transformation of the G virus tyrant, I have developed a lot of new abilities."

"In that case, you take the lead!" Mu Xing said.

"Ah? Me!"

Ye Fei was confused.

Ye Ling next to him couldn't stand it anymore: "Forget it, let me do it. There are many mechanisms in this underground ruins. With his level, he stepped on the trap and died before seeing the alien."

As he said, Ye Ling squatted slightly, cat ears grew on his head, and a black cat tail stretched out.

She looked at the passage ahead, her pupils dilated rapidly, and then she rushed out fiercely.

Suddenly

The alien traps on both sides of the wall sensed the approach of the heat source and automatically started.

The crossbow arrows and sawtooth flying discs with strong penetrating power were ejected.

And Ye Ling was like a flexible night cat, dancing among these crossbow arrows and sawtooth flying discs, avoiding all traps without error.

Finally, he landed lightly and kicked the mechanical sensor device on the wall to pieces.

"Come here!"

"My sister is awesome!"

Only then did Ye Fei run over happily.

Mu Xing did not make a move, but kept looking at the surrounding situation.

His mental power extended quickly to explore the entire underground ruins.

After being strengthened by the dark gold cells and the second-generation G virus, Mu Xing's mental detection distance reached one thousand meters.

One thousand meters was enough for him to detect the entire ruins from head to toe.

"Ye Ling, 30 meters in the left passage, there is an ordinary alien."

Mu Xing suddenly reminded.

After hearing the reminder, Ye Ling suddenly flipped back, and the next second, a black shadow attacked at an extremely fast speed.

The alien's sharp claws slashed across, leaving three deep marks on the hard rock wall.

Seeing Ye Ling avoid it, the alien's tail swept across.

The serrated tail is also a powerful killing weapon of the alien, and it is extremely flexible.

While sweeping and cutting, it can also turn quickly, and the sharp tip of the tail pierces Ye Ling.

The crystal blades in Ye Ling's hands crossed to block the stab, and the super-energy light ball under her feet exploded, causing her to roll in mid-air.

With the potential energy of the explosion under her feet, she kicked the alien's chin.

A blue super-power light spot exploded, and the alien's head was raised high.

Ye Fei behind him had already aimed at the alien's vitals.

The electromagnetic rifle in his hand fired, and the powerful kinetic energy of the bullet tore the alien's hard exoskeleton, and the highly corrosive blood splashed out.

Ye Fei pushed with his right hand, and his mental power turned into a thin wall to block the acidic blood for Ye Ling.

Ye Ling slashed with two swords, and the alien's huge head flew up.

Plop, plop.

The body and head fell to the ground one after another, smashing into the passage.

Mu Xing nodded. The two siblings cooperated well and fought smoothly.

It can be seen that Ye Fei has also improved a lot, especially in his combat awareness.

Suddenly, Mu Xing pointed to the passage on the right: "The second wave of aliens is coming, this time there are two, Ye Fei, let me see your progress."

Knowing that this was Mu Xing checking his progress, he quickly looked at Ye Ling.

"Sister, I will carry the monsters, and you will kill them."

Ye Ling did not say a word and quickly retreated.

Ye Fei went straight up.

First, the electromagnetic rifle fired bursts at the aliens jumping and moving on the wall of the passage.

Just as the aliens approached, he rushed forward, his hands were directly transformed, and he punched one alien away with one punch, and the other tried to pass over him to attack Ye Ling behind him.

However, before the aliens completely passed, he opened his mouth and sprayed a mouthful of thick dust.

Then he retreated quickly.

The alien that was sprayed by the dust suddenly began to twitch, and fungi grew on its hard black exoskeleton.

The body began to tremble uncontrollably.

"Is it the fungal spore dust from the US doomsday?" Mu Xing recognized the dust sprayed by Ye Fei.

"Yes, this is the talent I got in the last survival world, fungal spores, which can be used for parasitism and control."

Mu Xing knew that the alien was a genetic organism with strong resistance to various toxins and viruses.

But fungi are not viruses, nor are they genetic attacks. They are pure fungal proliferation and growth.

When the alien encountered this doomsday fungus that destroyed the world, it did not have time to evolve resistance, and its brain was controlled by the crazy growing fungus.

When the alien stood up, it was covered with mushrooms and fungal filaments.

"Attack!"

Ye Fei pointed with his right hand, and it began to attack the companion alien next to it.

At this moment,

a special alien hiding not far away was approaching quietly. This was a special alien in the challenge dungeon.

Mu Xing had already discovered this special alien that could change color like a chameleon, but he did not remind Ye Fei.

Behind

Ye Ling also put away his weapon and retreated to Mu Xing's side to watch the show. She seemed to understand Mu Xing's intention.

"My brother is going to suffer a loss!" Ye Ling said.

"That's not necessarily true!" Mu Xing seemed to be still very calm.

Just when Ye Fei was about to cooperate with the infected alien to kill another one, the color-changing alien suddenly attacked.

It stood up suddenly, aimed at its chest, and sprayed a ball of green acid.

"Come on!"

Ye Fei seemed to have been mentally prepared for a long time. He kicked the alien controlled by the fungus away and smashed it over, just in time to block the green acid.

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