The frog monster, an amphibious unit, was actually not created to climb the city in the first place.

However, due to the large number of infected corpses piled up high and layered corpses, there was even a low wall under the outer wall of the fortress.

With these meat pads, the frog monsters were unexpectedly able to take advantage of their bouncing strengths.

"Bang!"

Several members of the team in the shooting room took advantage of the monster in front of them to relax and shoot at another bastion on the opposite side not far away.

This way of shooting directly from behind, which is accurate and effortless, is one of the reasons why the bastion is difficult to attack.

However, there are too many monsters rushing in now.

"Click!"

A frog monster suddenly jumped out from under their noses, spread its arms out, and knocked the iron bar that had been hit many times in the shooting room away.

The iron bar that flew into the room sliced directly into the thigh of one of the team members, causing him to bleed.

The rest of the room was busy beating the frog monster to death on the windowsill trying to struggle to get in through the window.

But how can this open gap be so easy to close, and one after another monsters keep rushing in. As a result, these team members are a little overwhelmed, and they are simply unable to take care of the rest of the city wall.

…………

"Da-da, da-da-da!"

The people standing at the top of the walls now had no time to retrieve the cartridge casings, and they could only pull the trigger until the rifle in their hands made a firing pin sound.

"Excavator! Fast! Push down the crowd over here! ”

The great pressure made Leng Hao's voice a little hoarse.

"Get out of the way, get out of the way!"

Guo Yong operated the only remaining excavator rocker arm and slowly turned. The steel bucket was raised high, ready to topple a pile of people on the wall that was almost piled up to the height of the wall.

However, at this time, several dark shadows once again crossed the sky.

It's just that the dark night sky makes it too late for people to spot them.

"Bang!"

A water bomb hit the excavator exactly above the cab.

The splash of water and the sizzling sound of the metal coming into contact means that the metal is corroding.

Guo Yong stopped the operation and flew out of the cockpit.

His friend was a few steps too late and was killed in the driver's seat by a steady stream of water bombs.

"Guo Yong, don't!"

"Bang!"

Several more water bombs fell from the sky, and the range was exactly where Guo Yong was.

The darkness has brought too much trouble to mankind, and even if a large number of lights are used to illuminate the entire city wall, it still has great flaws.

First of all, the hot air balloon that finally rose up lost its effect.

The light was not enough to illuminate the dark road in the distance, and the large number of Amida protozoa made it impossible to shoot accurately even if people found the location of the water bomb.

Finally got the advantage of long-range suppression, and it completely disappeared at this moment.

At the same time, due to the large number of lights, the people on the city wall appear to be particularly dazzling in the night sky, which makes it easier for the Amida protozoa to distinguish their targets.

"Ahh

Guo Yong, who had just jumped out of the operation room, even though he tried his best to dodge, was still splashed all over his body by the corrosive liquid that splashed around.

Guo Yong is still alive.

The droplets of water that splashed from the ground made his whole body smoke and scream.

But after all, it wasn't Zhang Xiaomeng's direct hit with serious injuries, but, at least during this time, this technical school student could no longer play.

Even whether he can survive depends on the ability of the rat expedition in this regard.

"Doctor!"

"Help!"

"Quick, fight back! Counterattack! They're going to ruin this excavator! ”

The people on the city walls shouted.

Leng Hao used the power of Xingtian's arm guard to hack a frog monster to death again, turning his head and shouting.

"Destroy those sulfuric acid cannons, we must destroy them, or we will all die!"

In fact, after a few days of fierce battles, the sulfuric acid cannons in this Amida protozoan cluster have been greatly reduced.

In this dark cover, only four or five remnants shot at the head of the city.

But they pose a far greater threat than during the day.

People who have lost the advantage of hot air balloons have only one means of counterattack.

"Old Tang, are you okay?"

Lin Xinhong turned his head to look at Tang Yi, who had only one arm left, insisting on not retreating to rest.

Leng Hao also ran over with a war knife in his hand.

"Captain, this is different from what I used to learn."

Tang Yi licked his somewhat dry lips: "When those sulfuric acid cannons fired water bombs, there was no fire. I can't be sure how close they are at all. ”

"Is there any other way?"

Leng Hao gasped heavily.

If those sulfuric acid cannons destroy the excavators, then people will lose the last equipment to stop these monsters from climbing.

Moreover, now the large group of parasites behind the frog monster, the sharp-clawed soldiers, are approaching the city, and it is about to be time for the general attack of both sides.

Don't underestimate those few sulfuric acid cannons, maybe their existence is enough to ruin all people's hard work and efforts.

"I'll try, in this case, the consumption of shells will be very large."

A few drops of crystal sweat flowed from Tang Yi's forehead, wetting his gray hair.

As an artilleryman who went to the round of battles in the late Vietnam War, Tang Yi was actually not a top pacesetter.

Now, however, he is the hope of everyone in the entire Rat Expedition.

"Bang!"

Another water bomb hit the wall, and although the people who were dodging were not injured, it caused the wall to be empty, and several parasites rushed to the top of the city.

"Reload!"

Tang Yi, who was engrossed in his thumb and gestured to the vague position where the water bomb had just been launched in the distance, didn't care about the monsters that rushed up the city wall at all, that was Tang Yida's business.

With his shout, Lin Xinhong and several veterans around him immediately took turns to quickly throw mortar shells into the chamber.

"Boom!"

"Boom!"

The continuous firelight lit up in the distance, and Lin Xinhong and the others all opened their eyes wide, staring at the position where the cannonball was triggered.

This mortar rapid-fire combat method that they played when they were bored was almost the last resort of the Mouse Expedition in the Dark!

Four or five mortar shells landed almost at the same time, blasting the area into the air, and Leng Hao could see a huge amount of smoke and dust.

However, in the midst of this smoke, another water bomb rose from that direction and hit the people.

"Nima, you didn't hit like this?"

Just as Leng Hao was so angry that he was about to use the last resort, Tang Yi suddenly squatted down and began to shake the cannon body.

"Reload, quick!"

The loud sound that almost burst out of the old soldier's chest echoed throughout the city walls!