After the ancient crocodile in front of them stopped, their huge size suddenly caused them to block their kind on the road behind them.

It's like a car accident.

This change simply surprised Cheng Shen, and the Dark Thunder Mage was able to start brushing experience again.

The fourth wave of ancient crocodiles has reached 1,500 HP.

Resistance is also high.

The skin is rough and the meat is thick.

It's a bit hard to keep it in the usual way.

But now, thanks to the Yellow Wasps, a team of "pig teammates", they are all blocked on the road and have become live targets for the Dark Thunder Mage!

Click!

Pitch-black lightning slashed.

+4！

+4！

+4！

……

The Dark Thunder Mage's experience gauge increases at a rate visible to the naked eye.

During this period.

Cheng Shen only needs to control the other defense towers to prevent the yellow wasps in the air from approaching.

The Yellow Wasp also has 800 HP.

The flight speed is fast.

When encountering it alone, it is also a little difficult to clear the light in a short period of time.

At this time, Cheng Shen could clearly perceive that the increase in the attribute strength of the challenge monster had exceeded the increase in the ability of the defense tower.

Even with runes.

Normally, you will feel tired after the start of the fourth wave.

He is still in the case of flame towers, and now the average output data of the six towers per second can barely exceed 600+.

If it weren't for blindness, the disease would have worked wonders.

If you change to any other tower with other control effects, I'm afraid it will be difficult to defend against the fourth wave of monsters.

"It's not a perfect match......"

Cheng Shen looked for the reason why he felt struggling.

"Although the three thunder defense towers can increase the dark thunder mage, in fact, they don't have too strong cooperation with each other, like the Water Demon Tower with the Lightning Tower, it can be regarded as a T1-level match......"

"And the Dark Thunder Mage is too late......

Come early,

It should now be possible to cultivate to near rarity levels. ”

Cheng Shen shook his head secretly.

On the leaderboard,

The only survivor to make it through the fourth wave was drawn to the main tower during the first wave.

And then I was lucky enough to take a few defensive towers that matched the main tower.

Managed to hold the fourth wave without building a control tower.

Defeated on the boss of the fifth wave.

So

Luck is also an important ingredient in the Void Challenge.

"And their own equipment and skills."

Cheng Shen thought.

Having a great weapon is equivalent to opening with an extra main tower.

The Fire Wand is only a sophisticated-level weapon, not too powerful, and it only becomes extremely powerful due to his own attribute bonus.

But if he has a rare-grade weapon,

even

Is it a higher-level weapon?

Now.

Cheng Shen had to think of that legendary long sword......

If he had taken that sword at that time, I'm afraid he would have been able to kill madness in the Void Challenge by now.

But there is no such thing as ifs.

Besides, if he hadn't chosen the Crimson King's secret order at that time, it was unknown whether he would have been able to trigger the curse of the castle tenants.

This seems to be a deadly crisis.

Actual.

But it was an important opportunity to help him solve the curse of the deep sea.

Cheng Shen can now feel the pain of being tortured and unable to sleep, he doesn't know how long he can last, and he doesn't think it will be too long......

Then there's the skills.

A good skill can also work wonders in the Void Challenge.

It is not necessary to output skills.

Like what

Bloodlust.

The side effects of Hemophilia are ineffective against towers.

Therefore, it has become an output-only magic skill here!

Cheng Shen is active.

He realized that after the Void Challenge was opened, weapons and skills, which were originally inconspicuous to the survivors, would definitely usher in a wave of value increase.

His skill book, which was only a bargain, was about to sell for a sky-high price.

Luckily, it hasn't been swapped out yet......

After summarizing the four key factors, Cheng Shen gathered his mind and began to concentrate on dealing with the yellow bees, with the confinement of the air trapping net, coupled with the paralysis of the thunder magnetic laser tower and the palm thunder, the yellow bee colony was almost impossible to move an inch.

Without worrying about the ancient crocodile on the ground, Cheng Shen quickly cleaned it up.

Swish!

Swish!

The golden light is constantly surrounding.

The Dark Thunder Mage has finally broken through to level 11 after continuous output.

Crackling!

Surrounded by pitch-black thunder, its eyes burst out with brilliant thunder, and its originally illusory body faintly became a little condensed.

Destroy the thunderclouds!

Bang!

There was a muffled sound of rolling thunder in the sky.

The clouds instantly condensed, almost enveloping one-third of the void path, and the thick electric snakes surged in the thunderclouds, and the terrifying power quickly accumulated, and finally turned into thunder pillars the thickness of an arm!

Click!

-870！！

-870！！

-870！！

……

After breaking through level 11 and being promoted to a Fine-level defense tower, the Dark Thunder Mage's panel directly increased from 130 points to 230 points.

Equivalent to the stat of a Tier 11 Tower.

The attack growth it lacked in the normal level was all made up for in it.

There is also a 60-point base attack bonus for the Level 3 Giant Tower.

Its panel has already reached 290 points.

The triggered Dark Slayer Thundercloud has a triple panel attack bonus!

Cracking sound!

The thunder pillar fell like a dense raindrop into the gathered group of ancient giant crocodiles, and when they split their skin, their flesh and blood splashed.

Swish!

The Dark Thunder Mage, who had just broken through, had been upgraded again.

At level 10, its experience gauge increases to 1000 points, increasing its growth requirements tenfold, but killing the Ancient Crocodile is just as rewarding.

One has 50 experience gains.

The thundercloud lasted for a full fifteen seconds, and the number of attacks was countless, and all one hundred and twenty ancient crocodiles were killed.

Dark Thunder Mage has been upgraded to seven levels in a row!

It's a pity that after all, it was the experience of two waves of monsters, otherwise it would have been basically stable to cultivate a rare-level main tower in the fourth wave.

Cheng Shen had some regrets.

[Successfully defended!] 】

[Reward has been accumulated so far: 60 gold!] 】

[Do you want to continue the challenge?] 】

……

After the defense ended, the Dark Thunder Mage was promoted to level eighteen.

The panel has risen to 370 points, and the attack bonus of the Tower of Giant Tower at level 4 has also reached 80 points.

The overall output is another qualitative leap.

This gave Cheng Shen some confidence to meet the fifth wave of boss battles.

The choice of the fourth defense tower.

He also had ideas.

Control it all!

The output is currently sufficient even for Dark Thunder Mage alone.

Moreover, now take a rare-level defense tower, even if it is built, it is the initial level, and there is no damage at all, the fundamental purpose of the Void Challenge is to let them build a lineup system around the main tower.

Cheng Shen suddenly woke up,

This may be a kind of strategic help for survivors in the system.

There are Void Challenges, where survivors can experience one or more random main tower combinations every three days.

This will allow them to accumulate a lot of defensive experience.

When they return to reality, they will also be able to filter their defensive lineup based on the experience gained in the Void Challenge.

Equivalent

There's an emulator that you can try an unlimited number of combinations.

This is a plug-in that the system gives to everyone.