Ro Li was the second to react.
He raised his Rare-grade assault rifle and aimed it in the direction of the intruder team. He pressed the trigger hard and fired all 25 bullets in the magazine in one breath.
A Mechanic's mechanical control skill, which also had a bonus to the shooting of assault rifles.
Although it was not as accurate as the Ranger's max level skill, with enough numbers to make up for it, it still caused a huge amount of damage.
Rifle bullets that were close to twice the speed of sound weaved into a dazzling fire net, covering the sky and covering the earth as they rolled towards the enemies who were caught off guard.
With the clanging of metal shells and smoke, only Ro Li and the Ranger were left standing in the tunnel.
"Calculating the location of the bearing wall and placing the bomb. The target was to blow up the first to fourth underground floors.”
Ro Li quickly gave the order to the Rangers.
Then, he reloaded his rifle and slowly retreated to the depths of the second floor with the Rangers who had begun to set up their positions.
Before he retreated, Ro Li set up a few simple traps with grenades behind the doors.
These traps didn't need to kill the enemy. As long as they could stall for a few more seconds, they would be of value.
"The second level is complete. The next stage will be the fourth level.”
The work efficiency of the Rangers had reached a limit due to the design of the smart chip.
In just one minute and forty-five seconds, the blasting of the second underground floor was completed.
Immediately after, it waved its high-molecular cutter and destroyed the floor under its feet.
He descended to the fourth underground floor and began to repeat the arrangement of the second floor.
At this time, the intruders had not reached the fourth underground floor.
Perhaps it was because they were certain that the only exit on the surface was sealed, the intruders who entered the underground were not in a hurry.
The search was mainly to be cautious and reduce the casualty rate.
Only after completely controlling the upper level would he begin to explore the next level.
This gave Ro Li and the others a chance.
Ro Li allowed the Rangers to set up the bombs on the fourth underground floor and returned to the fallout room.
The way the lieutenant colonel and the other two transported the supplies was similar to Ro Li's.
They directly blasted a hole through the floor of the armory and transported it on the spot.
By the time Ro Li returned, they had already moved most of the things they needed.
At this moment, he was dragging a cart to the water pump area on the sixth floor underground.
He removed the two emergency lights in the fallout room.
Ro Li used the night vision goggles on his tactical helmet to connect the power source to the computer in the fallout room.
On the table in the middle of the room, a white light flickered slightly, and a 3D holographic map appeared again.
"There are more than a thousand people at the entrance? You really think highly of us."
Ro Li's gaze stopped at the entrance of the fallout room for a moment before moving down.
There were about 70 intruders who had entered the underground.
Other than a small portion who stayed on the first three levels, the rest of the people were divided into three small teams and were heading towards the fourth level.
"I wonder if we can lure some people down from the ground.”
The opportunity to kill all his enemies in one fell swoop was simply too good. Ro Li couldn't help but think of something else.
However, he only thought about it for a moment and shook his head regretfully.
"I can't be too greedy."
Any rational commander would not rashly throw a large number of troops into the complex underground structure.
If they displayed too much firepower, it was very likely that they would not attract the enemy's reinforcements, but chemical weapons or incendiary bombs.
After waiting for another minute, Ro Li received a message from the Rangers.
"The setup is complete. The estimated explosion time is 1.75 seconds.”
Five seconds later, the returning Ranger appeared in the dark fallout room.
"Goodbye."
He took one last look at the 3D map and saw the intruders gathered on the fourth underground floor.
Ro Li walked into the armory next door and followed the path that the lieutenant colonel and the other two officers had opened up before jumping into the sixth floor.
At the same time, the bombs that the Rangers had set up were detonated by him.
With a series of muffled explosions, the entire first four floors collapsed.
"System prompt: Killed ordinary soldiers x64, experience points 372.”
" System Notification: You have received the Machinery Hivemind's bonus effect. The experience gained has changed to 3,720.”
After solving the problem of the pursuers, they also blocked the entrance tightly.
For a short period of time, Ro Li was in a relatively safe fortress.
This gave him enough leeway to make more comprehensive preparations before entering the underground river.
When they arrived at the water pump area, Ro Li controlled the mechanical arm to disassemble the water pump into parts and load the propeller onto the Rangers.
After that, they made it waterproof.
After the treatment, other than the melee high-molecular cutter, the other weapons on the Rangers were temporarily unusable.
Correspondingly, they could dive into the water and obtain a certain amount of underwater mobility.
As time was not tight, Ro Li did not use his psionic energy to speed up.
By the time all the modifications were completed, more than ten minutes had passed.
The ceiling began to shake again.
This meant that the enemies on the ground had not given up and were still trying to break through the ruins.
"Are we really going down from here?”
Standing at the entrance of the water pipe with the cover removed, a young subordinate who looked like a civilian officer on the lieutenant colonel's side had a faint trace of fear on his face.
He looked down a little timidly.
The pipe was about two meters in diameter, and it was cold and deep.
At the end of it was a region that no one had visited since the ancient era.
No one knew what would happen inside.
As an ordinary person, the young man instinctively felt a fear of the unknown world.
"Just treat it as walking through the sewers. There's no difference.”
Ro Li was very relaxed. Compared to the bitter battle after entering the starry sky in his previous life, this was really just an ordinary journey.
He looked at the entrance and thought for a moment before saying,"I'll take the lead."
The lieutenant colonel and the other two officers were all soldiers of the Federation and had undergone proper martial arts training.
However, their levels were not high.
He did not cross the threshold between an ordinary person and a supernatural being.
As the strongest person present, Ro Li was duty-bound.
This was also the reward Ro Li had to pay for the free ammunition and supplies he received.
Next.
He had made all the necessary preparations, so there was no need to hesitate.
Ro Li controlled the Ranger to be the first to slide down the rope.
He followed closely behind.
A few minutes later.
Ro Li had successfully reached the depths of the water.
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