The end of the world: Start with a gun and build a tank in ten days

"Second-order mutation...crow???"

The first level is so terrifying, what about the second level?

Lin Nan's heart skipped a beat.

Through the crack in the window, he stared at the sky.

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Suddenly, at the corner of a tall building, there was a long blast,

A huge black bird appears.

The appearance is exactly the same as the one just now.

The difference is his body.

The wings are spread out and are tens of meters long.

The eyes alone are as big as an adult's head.

It hovered in the air for about ten seconds, as if it had discovered something, and then quickly landed.

As expected of a second-level mutated creature, it was hundreds of meters in the air and was about to touch the ground in a matter of seconds.

The first-order zombies that passed by after gliding for several meters were instantly disfigured.

The two of them couldn't help but gasp.

The first-level zombies they struggled to deal with were just as simple as a wing gently scratching their neck in front of the mutated crow.

"Are those wings made of knives?"

Chu Mengyao murmured softly.

Lin Nan said nothing, his eyes fixed on the second-order mutated giant bird.

The latter had already arrived next to the first-order black bird that had just died.

Suddenly there was a sharp cry, and the giant bird looked up to the sky and roared.

The loud sound attracted more zombies.

"broken!"

Lin Nan quickly dodged and hid behind the wall.

Through the hidden little spider, Lin Nan saw the giant black bird outside staring at their house.

To be precise, it was him!

Lin Nan didn't know how he was exposed. Just when he was secretly looking at the giant bird, he saw it suddenly turned its head.

One person and one bird, looking directly at each other!

At that moment, a huge feeling of fear surged into my heart.

It was the feeling of being prey and being targeted by a ferocious beast.

Lin Nan's heartbeat accelerated rapidly. He clenched his fists and tried to calm himself down.

"You can be afraid, but you can't be cowardly!"

The giant bird hasn't taken action yet, but more and more zombies are gathering. He knows that he can't wait any longer!

"Blast to the funeral!"

Lin Nan activated his second power skill, and in an instant, the corpses of first-level zombies lying outside exploded one after another.

It was said that they exploded one after another, but only a dozen of them exploded.

One skill requires 20 kill points, which is already his limit.

But fortunately, the effect is not bad.

A huge explosion suddenly sounded, and the power generated by the explosion of more than a dozen corpses was five or six times more powerful than the previous 20 M3 grenades.

The zombies gathered together were blown away instantly, and even the giant bird was frightened and flew directly into the sky.

The giant yellow claws were dripping with blood.

This wave also gave Lin Nan a small profit in killing points.

"Did you run away?"

Lin Nan looked up. Compared to the increasing number of zombies below, he was more afraid of the giant birds in the sky.

However, due to window restrictions, Lin Nan found no trace of the giant bird.

However, he already had a vague answer in his heart.

Because the huge sense of crisis has never dissipated.

"Brother Nan..."

Chu Mengyao looked at Lin Nan with a worried look.

"Yao Yao, we are going to fight!"

Lin Nan forced out a smile,

"Fight to stay alive!"

As he finished speaking, a light flashed in his hand, and the giant Gatling appeared again.

But this time, it was Lin Nan who carried it!

Chu Mengyao hadn't recovered yet, but she nodded heavily.

"Coming!"

Lin Nan turned around and pointed Gatlin's gun toward the window.

He just shot.

Hundreds of bullets penetrated the glass in front of him.

And, a huge black shadow suddenly appeared.

"Come on, let's see if it's your skin that's tougher, or my gun."

Chu Mengyao was on the side, desperately controlling the second-level mutated crow.

Due to the excessive force used before and the high level of the target, Chu Mengyao could only control it for less than a second this time.

Then he almost fell down.

However, even though it was only one second, it was enough for it to eat nearly a hundred rounds of bullets.

The shrill chirping of birds resounded across the sky.

The second-level mutated crow was shot!

Blood flowed on its black feathers.

"efficient!"

Lin Nan raised his eyebrows slightly, he felt hopeful!

But this second-level mutated crow is not stupid, it seems to have developed intelligence.

Realize that the opponent not only has control over you, but also has powerful weapons.

Since it's difficult to attack, just get out of the way.

However, getting out of the way doesn’t mean leaving.

It landed not far away, chirping wildly.

Lin Nan knew that it wanted to attract all the zombies.

After Lin Nan and the others are defeated, they will harvest again.

Although the distance was enough, Lin Nan couldn't hit it.

Due to Gatlin's loud noise, many zombies were already attacking him.

Although they are on the third floor, once these zombies gather into a group, it is easy to get in.

Crisis!

A real crisis!

Lin Nan finally knew what the real apocalypse was.

Now more and more zombies are coming, and soon they cover one floor.

Lin Nan could only use Gatling to shoot wildly.

And try to pursue accurate shooting, because these zombies are different from the ordinary zombies before.

If you don’t start it, it will take more than a dozen rounds.

Lin Nan gritted his teeth and used explosives to relieve the pressure from time to time.

Although this skill is powerful, it requires 20 points to kill two to make up for the loss.

If you can't kill two of them, it's a waste.

His only hope to break the deadlock now is to build a tank worth 4,000 points.

400 need to be killed!

However, ideals are full, but reality is very bad.

The zombies on the opposite side rushed over too fast. A strange zombie was able to jump more than three meters high, stepping on the shoulders of other zombies and flying directly in front of Lin Nan.

Lin Nan couldn't dodge, and it was too late to hit it. At this moment, "bang", the zombie exploded!

Chu Mengyao forced herself again and used the mind explosion.

"Yaoyao, thank you!"

The little girl was pale, but she replied with a smile,

"You're welcome, Brother Nan, come on, I have a hunch that we will definitely survive!"

Lin Nan didn't speak, and what responded to her was the bullets in Lin Nan's hand that kept shooting.

"Explode funeral!"

"Explode funeral!"

...

Several sounds in succession.

Explosions continued, and the "foundation" for the zombies to climb the building was blown up, and Lin Nan's plan to store killing points was also destroyed.

Tanks cannot be built!

Now, only by constantly using blasting funerals can the zombies not surge up.

But the one-to-two point difference means that the points are likely to be used up.

At that time, the skills cannot be used, and the variables will increase.

Even, they will be wiped out in one wave.

How to break the situation?

Lin Nan glanced at the little spider next to him with his peripheral vision.

This reconnaissance robot can hardly help in the battle.

The only skill, metal spinning, is not very helpful to the current situation because it consumes points, so it is not authorized by Lin Nan to use.

It also knows that it is useless and is anxious.

It is very strange. It is obviously a robot, but it seems to have human consciousness.

The little spider also found that Lin Nan looked at it from time to time. It stopped turning around and turned its head to look at Lin Nan.

The body also made a strange "buzzing" sound.

At this time, Lin Nan came up with another plan.

Rather than a plan, it's better to say it's a gamble!

"According to the system level, I should be considered a first-level evolver now.

Facing the second-level mutant crows and the groups of first-level zombies, it is inevitable that I will be defeated, but what if the system level becomes the second level?

Will there be a miracle?"

This is what Lin Nan thought in his mind, and he also tried to ask what changes would happen to the second-level system.

But the system did not reply to him.

This is a gamble.

He now has 15 crystals on him. As long as he gets 5 more and accumulates 20, he can upgrade the system.

And the only one who can help him collect evolution crystals is the little spider.

In fact, Lin Nan can also use these crystals to upgrade attribute points and obtain skills.

But these skills are not to mention whether they are beneficial to the current situation. He may not be able to afford the kill points spent on using skills.

"This is the only way for now!"

Lin Nan looked at the little spider and gave him a new collection order.

"Our hopes are all in your hands!"

Hearing Lin Nan's words, the little spider stood at attention instantly, like a steel soldier who was entrusted with a mission in a critical situation.

After pausing for only about a second, the little spider instantly disappeared and sneaked down.

The zombies' attention was all focused on Lin Nan, and they didn't care about the little thing that sneaked out.

The ground was covered with zombies' bodies. Stepping on the head of a zombie, the little spider turned on the scanning function.

Through this function, it found that the evolution crystals existed in almost only two places.

One is the explosion zone, which is the range of the blast funeral skill.

The other is under the feet of the black giant bird.

This guy seemed to know the wonders of this thing. While watching the battle, he would collect it from time to time.

And under his feet, there were also the most evolution crystals, with more than twenty pieces.

The little spider analyzed it through its own safety measurement system.

The result was that the survival index in the explosion zone was 31.5%,

while that of the giant bird was 0%.

After a brief thought, the little spider chose the explosion zone.

The blast funeral caused great damage to zombies, and the same was true for the mechanical spider.

Especially since it didn't know which corpse under its feet would suddenly explode.

This couldn't be blamed on Lin Nan, as he was also overwhelmed and hovering on the edge of death.

Not to mention caring about where the little spider was and whether it would be affected by the explosion.

Since it didn't know which corpse under its feet would explode, it tried not to touch the corpses, either jumping or clinging to the wall.

Soon it collected two.

And the third was right in front of him.

However, at this moment, the head of a zombie next to it was blown up.

Then there was a corpse explosion.

The little spider held the small black bag containing the evolution crystal tightly, but was knocked away.

The right front paw was directly exploded!

The little spider fell heavily on the floor, and a crack appeared on the exploded front paw.

Perhaps it was God's blessing that there happened to be an evolution crystal where it landed.

Seeing the shining crystal, the little spider jumped up instantly as if it was resurrected with full blood. At first, it almost fell, but fortunately it stabilized its body in the end.

It excitedly put the crystals into the small black bag hanging around its neck. Every time there was an explosion, it curled up tightly, fearing that the small black bag would be blown to pieces.

After collecting the third crystal, the little spider looked at the explosion area, thought for a short time, and rushed in again.