At this moment, the rotten zombies were less than 50 meters away from the wall.

Level 6 and above monsters were indeed more powerful. They seemed to be slow but their steps were big.

The second mortar had finished charging up its power. Then, it suddenly shot toward the rotten zombies.

The remaining dozens of zombies were still charging forward but were beaten to a pulp while the stragglers were directly killed by Lindsay's combat techniques.

The results of these four days of training were extremely remarkable.

The corrosive zombies had effectively been dealt with through force.

Looking at the broken limbs on the ground, Lindsay was a little speechless.

He didn't expect that in less than five minutes, these rotten zombies would be completely eliminated.

Following that, Lindsay turned his gaze to look at the others. Natasha was obviously the first to take care of those monsters.

As for the other two defense towers, they quickly finished off the battle with the help of a few steel armored female soldiers.

After that, looking at the treasure chests on the ground, Lindsay could no longer hold back the smile on his face.

He laughed out loud.

There were so many treasure chests, more than 600 of them. He had actually obtained them just like that.

Natasha and the female soldiers had also picked up the treasure chests and they quickly opened them up.

[The battle is over. Calculating rewards…]

[Battle Reward!

Enemies: 486 rotten zombies, 114 elite rotten zombies.

Combat Evaluation: S rank.

Basic reward: 600 Mana Stones.

Additional reward: 300 mana crystals, 400 mana stones, magic skill scroll [Corrosive Arrow], and Poison Vine Tower.]

"A total of 600 monsters. The reward is not bad. There's another magic skill scroll too."

Although the magic skill scroll had a poison attribute, it could be used in live combat depending on the situation. Once he learned the skill, the corresponding magic attribute would be awakened. However, it would require a certain amount of mana crystals.

Then, he became a little serious.

He did not expect so many troops to attack so quickly. This was a little ridiculous.

However, this was also expected because of the influence of the void laws in the Endless Demon Territory.

They would definitely not let one pass so easily.

Since he already had such powerful strength, there was no such thing as an easy trial. He wouldn't be allowed to 'have it easy'.

However, tomorrow was the sixth wave. They had already passed five days, so it would definitely be even more dangerous.

Fortunately, this wave brought him an unknown reward, so he could now upgrade his territory building.

With this, it would be much easier to deal with those guys.

Thus, Lindsay no longer hesitated and prepared to level up.

…

[Mana stones - 200.]

[Icicle Tower upgraded to Level 2.

[Function: Icicle (Level 2, one shot every ten seconds).

…

[Mana stones - 200.]

[Lightning tower upgraded to level 2.

[Function: intense lightning (one lightning strike per second).]

…

[Mana stones - 200.]

[Poison Rain Tower upgraded to level 2.

Function: poisonous raindrops (300 drops per second).]

…

[Mana stones - 200.]

[Armor piercing tower upgraded to level 2.

Function: armor-piercing (penetrates steel armor directly).]

...

In an instant, 800 mana stones had been consumed.

Adding the previous 40, there were now 240 mana stones left.

At this time, the four defense towers had become bigger and the light they emitted was much brighter.

Looking at the upgraded defense towers, Natasha's face also revealed a look of joy.

Natasha seemed to want to say something, but she was a little hesitant.

"What's wrong?" Lindsay asked. "Just say what you want to say. We're friends. We don't have a superior-subordinate relationship."

Natasha calmed down when she saw Lindsay's clear eyes and said, "My Lord, why don't we upgrade the summoning crystal? With that, we'll have one more companion to protect you and you'll be much safer."

Hearing Natasha's suggestion, Lindsay immediately nodded. "Then we'll do as you say."

Although his five female soldiers were also very strong, their individual combat strength was still inferior to Natasha's.

Therefore, the more strong people like Natasha in his territory, the safer he would be.

And if he wanted to get a second hero, he had to upgrade the Hero Pavilion. Otherwise, there would be no place for the second hero.

Natasha was touched when Lindsay agreed so readily.

She planted a light kiss on Lindsay's lips to show her appreciation.

This made Lindsay feel hot again.

Although Natasha was only thanking him, she seemed to be able to break through his defenses.

Fortunately, he had cultivated his power to a certain level or he would have been affected by her charm.

However, there was also another reason for him to upgrade the summoning crystal. Besides his own safety, Lindsay also wanted to find a companion for Natasha so that Natasha would be able to enjoy her battles more.

After that, Lindsay shouted, "Upgrade!"

Then, he saw a flash of light in the Hero Pavilion.

However, the change was not that big.

[Hero's Pavillion: Level up to level 2.]

It could summon now summon new heroes.

Lindsay could clearly feel Natasha's aura changing and then returning to calmness to reflect the changes to level 2.

Although Natasha's temperament did not change much, she was still beautiful and a little cold.

However, Lindsay definitely felt the changes.

Natasha had leveled up, so her strength was definitely stronger.

There were only 40 mana stones left.

Fortunately, there were still treasure chests that hadn't been opened, so his chances of replenishing them were high.

Just like that, Lindsay walked to the Hero's Pavillion and placed 100 mana crystals on the table.

He muttered, "Summon!"

Although the chances of summoning a legendary hero were smaller because he had ended up with Natasha, his first summoning had ended in failure.

-10, -10, -10, -10...

Natasha kept encouraging him not to give up.

He had also managed to get some good magical items instead of heroes.

[Magical Gloves

Type: Equipment

Quality: Purple

Level: 10

Attributes: Vitality +20, Spirit +5.

Restrictions: Vitality max increase to 50.

Description: Fighting with this pair of gloves makes one even more powerful.]

This pair of gloves was as thin as a pair of cicada's wings and did not feel anything at all

It was just right for Natasha. This way, Natasha would be like a tiger with wings!