After some consideration, Lu Wei first upgraded the flame tower near the entrance of the passage to a second-level state.

Consumes 150 normal resources and 15 special resources.

In a T-shaped corner area in the middle of the defense platform, Lu Wei upgraded all the four machine gun towers here to the second-level state.

Consumes 400 Normal Resources and 40 Special Resources.

On two separate platforms on either side of the road near the entrance to the passage, Lu Wei built two more cannon turrets.

Consumes 400 Normal Resources and 40 Special Resources.

Then transfer the machine gun tower in the center of the O-shaped road section near the energy center to the central 10-type road section, and on the vacated tower position, Lu Wei built a laser tower.

Consumes 200 normal resources and 20 special resources.

There are 78 normal resources and 13 special resources left.

Lu Wei originally wanted to build two more laser towers, but the resources were insufficient, so he could only build one laser tower.

"1 second-class flame tower, 8 first-class machine gun towers, 4 second-class machine gun towers, 2 cannon turrets, 1 laser tower...... It should be able to cope with the onslaught of this wave of monsters. Lu Wei muttered to himself.

"Kai, open the gate of the base and face the monsters!"

"Understood!"

Kai opened the vents and let the monsters into the base.

This is very different from what happened in Defensive Formations.

In the game, flying monsters and land monsters enter the base at the same time and attack together.

But in the tower defense base, Kai can open the ventilation hole, let the flying monsters in first, and then open the base gate after the flying monsters are completely destroyed...... Separating the air and land will undoubtedly relieve a lot of pressure.

After the vents were opened, more than twenty runners floated in a "one" formation towards the energy center.

Rumble!

Rumble!

White smoke rose from the muzzles of the two cannon turrets of the independent platform and suddenly opened fire.

Syllable!

Syllable!

The two runners flying in front of them, covered in green and looking like frogs, were hit hard and flipped upwards first, and then fell straight down, falling to the ground and dying.

Bump Bump Bump!

The machine-gun turret also fired, and the dense rain of bullets caused the fragile runners to rain down like dense drops, and in a few moments, they were wiped out.

The base gate opens.

Monsters swarmed in.

The flame tower spews hot flames, the machine gun tower pours a torrent of metal, and the cannon turret can take away an elite monster with thick armor with a single shot.

drones, swarms, motorwalkers, rhinos, crabs...... These monsters were roasted by the flames, battered by a metal storm, and shattered by cannon shells.

Today, because there are a few more second-level yellow towers, the tower array's ability to deal with monsters has been greatly improved.

Middle T-corner.

Four secondary machine gun towers were put to the test by monsters.

A dozen or so heavily armored rhinoceros approached the corner.

"Bump Bump!"

Immediately encountered an unprecedented rain of bullets.

The chamber and barrel of the secondary machine gun tower are made of special materials, which are extremely strong, the caliber has also increased by 50%, and the power of the bullets fired has also increased from an AK-47 to a level close to that of the M82A1 Barrett, plus the rate of fire has also been significantly improved, and the destructive power is incomparable.

Ding-ding-puff!

The results are immediate.

Except for a few bullets that were bounced back by the armor on the rhinoceros's body, the vast majority of the bullets pierced the rhinoceros's body, forming a tumbling damage in its body, expanding the wound, deepening the wound, thumping, and finally forming an explosive effect.

Collapse!

A rhinoceros exploded in two, flesh and blood splattered, and the dead could not die again.

Collapse Collapse Collapse!

The explosion sounded again and again, and not a single rhinoceros could break through to the corner.

"Spotting the Sprinter ......"

"Spotting the Lurker ......"

"Rolling machine enters the base ......"

Kai fired several alarms, and three extremely fast monsters rushed into the base.

The sprinter's two calves move like an afterimage, and he travels at a speed of more than 70 kilometers per hour.

Not only are the lurkers fast, but they are also stealthy, making them difficult to detect when they are not close to towers.

The body of the rolling machine is very similar to a Michelin tire, the body is huge, rolling forward, Lu Wei estimated that the speed is definitely more than 80 km / h!

Kai said hurriedly: "Wei, the speed of these monsters is very fast, and the rolling machine still has a certain protective ability, so be careful!" ”

"Kai, the flame tower remains in a state of continuous fire, the machine gun tower around the corner is ready, be sure to leave all these monsters behind!"

The weakness of the Sprinter is that he is not tolerant of high temperatures, and as long as he is scorched by the flames of the Flame Tower, he will not be able to die soon.

And in the corner area, no matter how fast the monster is, it has to slow down and turn.

"Good! The sprinters were burned to death! ”

"The lurker has appeared, I see it, hit, hit!"

The three-headed roller rumbled forward, most of the attacks hitting him missed, and a few didn't do much damage, and it was still traveling at a high speed.

The four secondary machine gun towers in the T-corner killed one of the rolling machines as they slowed down in the corner, and the middle ten-type corners killed another one, leaving the rolling machine speeding towards the energy center.

"Laser tower?"

Lu Wei saw the last line of defense blocking this rolling machine, a laser tower that had just been built and could not prove itself.

"Rub~~~"

A green beam of light suddenly appeared at the top of the laser tower, hitting the rolling fuselage.

"Whoa~~"

The speed of the rolling machine immediately slowed down, as if it were tied up by a green rope.

Just over a second, a ball of fire suddenly appeared on the body of the rolling machine, and it burned violently.

As the laser's gaze continued, the fire grew bigger and brighter!

The rolling machine let out a scream, but finally broke free with its speed, and with a body of fire, took the three energy cores from the energy center.

When returning.

It met the laser tower again.

The green light flashed, and the green pillar of light hit its body again.

1 second, 2 seconds,..., 5 seconds, 6 seconds

When the sixth second was counted, an extremely bright light suddenly appeared on the rolling body, and then the entire body burned violently.

"Wow~~!"

It let out a reluctant scream, threw away the energy core, and fell to the ground, burned to ashes.

The rolling machine is killed by the laser tower!

Awesome!

Looking at the outstanding laser tower, Lu Wei nodded in his heart.

Kai smiled and said: "Wei, don't underestimate the laser tower, it can capture the target in 0.01 seconds and emit high-energy rays, for a monster with medium defense, the laser tower can heat the monster in 6 seconds, and then form penetration damage, for those monsters with weak defense and fast speed, the laser tower is their nemesis." ”

After listening to Kai, Lu Wei was slightly stunned, and immediately thought of the word "tough".

He knew the power of the Flame Tower, and the temperature of the flame cone spewed out by the second-level flame tower was as high as 1,800 degrees! The fragile monsters will be burned on the spot.

But even with the high temperature of 1800 degrees, it still can't cause fatal damage to some monsters, and monsters above the elite level can still break through the flame zone in style and continue to move forward.

The laser tower is different, it can continuously heat the monster, and finally to the point of "burning through", how many degrees can its temperature reach?

I'm afraid that kind of high temperature is not something that ordinary materials can resist, and once it forms a penetration, no matter how powerful the monster is, I'm afraid it won't be far from death.

This process only takes 6 seconds!

There is also the ability to lock onto monsters for 0.01 seconds......

Lu Wei took a deep breath, "It seems that I seriously underestimated the laser tower, it is much more powerful than I thought!" ”

"No matter what kind of tower it is, as long as it is used well and fully exerts its role, all waves of monsters can be annihilated!"

Speaking of which, the monsters that invaded the base, except for the corpses in one place, there was no living thing standing anymore.

The fourth wave of monsters, all annihilated!