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It was the first time, a Zerg that could move underground appeared. Compared to the armored Zerg on the ground and the airborne Zerg in the sky, underground Zerg was more difficult to stop.
Looking at the squirming ground, each candidate felt a rise in their heartbeat. Even the masters watching the battle from outside were also focused, as they rarely encountered this kind of Zerg.
Fleming had already brought a team of Green Berets beneath the walls. Down below the ground, it took them a few years to make those tunnels under the wall, it had been laid out everywhere and was in excellent condition. Under the ground, they could hear the sound coming from nearby through sound devices.
BOOM-!, BOOM-!, BOOM-!, BOOM...
There seemed to be an excavator working there, but it was the Zerg digging the ground.
"Initiate the plan," Fleming ordered.
Against the underground enemy, the Astra Militarum had prepared a plan, so the guardsmen of the Astra Militarum began to make their move. They set up an M.G. to shoot at the entrance of the tunnel, and inside the tunnel was through a pipeline, they poured kerosene into it.
One of the original functions of these tunnels was to deal with possible underground enemies, hence the slope and depth of the excavation were carefully throughout. If kerosene was to be dropped in the tunnel, it would slowly flow forward.
The sound of the digging was getting louder, which meant it was getting closer. Everyone's hearts were racing!
After a minute or so, Fleming shouted, "Here it comes-!"
In the next moment, there was a loud boom. On the other end of the tunnel, a hole was dug and a huge Zerg with a head size of about 1 meter was drilled out.
It was chilling to the bone, as almost all of this Zerg's head was just its mouth and teeth, its mouth was densely packed with sharp teeth. The people watching were horrified, as the Nydus Worm rushed in.
BOOM-!
There was another loud bang and another hole appeared next to it, an almost identical Nydus Worm drilled out from this hole.
After the 2 Nydus Worms suddenly came to an empty surrounding, there was a slight pause, but then it quickly moved forward. They were not too fast, but not too slow either and they were less than 200 meters away from the team.
After the body of the Nydus Worm came out, everyone could see clearly that these Zerg had very long bodies. They were almost 5 meters in length and their appearance was similar to that of a worm. There was nothing defensive, but the most horrifying thing was its head. Everyone could think of the feeling of being bitten by it.
BOOM-!, BOOM-!, BOOM-!, BOOM...
Naturally, it wasn't just these 2 Nydus Worms who came through, there must be more Nydus Worms and they were digging in from the sides, and from the rear. They were breaking open the soil and coming into the tunnel.
In just a few minutes, there were already about 10 more Nydus Worms in the tunnels, filling up almost all of the space in this tunnel.
Seeing the group of Humen near the entrance of the tunnel, not only was there no fear, instead, they even opened their mouths. They were emitting a screeching sound like scraping a wall. Followed by, them springing even faster.
At this time, Fleming ordered: "Open fire-!"
BANG-!, BANG-!, BANG-!, BANG...
A stream of bullets was quickly blasted out. It wasn't these Nydus Worms that they were shooting at, it was the kerosene on the ground. Inside the tunnel at this time, all of the ground of the tunnel was covered by kerosene. As the bullet hit the kerosene, it was instantly set on fire.
BOOM-!
A raging fire flared up and in an instant, the surrounding Nydus Worms were wrapped in it.
Nydus Worm didn't have any heavy armor, so they frantically twisted their bodies. But in this small space, there was no way to escape, so they could only be burned alive.
Everyone on the team had a mask on as they left the tunnel. While defending against the Nydus Worms attack, they were preventing the flames from getting out of control. Seeing these Nydus Worms which were engulfed in flames, everyone breathed a sigh of relief.
The people outside couldn't see this scene because it was happening underground, so there was only Sebastian who could see it very clearly. In his opinion, apart from being able to dig up soil, every other aspect was weak. Cross didn't even use that dangerous weapon. With only a fire attack, these Nydus Worms were easily stopped.
On top of the walls, hearing the report from below, Cross and others were relieved. The underground attack was defended successfully, then they could fully focus on dealing with aerial and ground enemies.
As before, these Mutalisk also had armor. Although their strength was better than earlier, they still couldn't withstand the M.G. firepower, as they were pinned to death 500 meters away.
10 minutes passed.
2nd 10 minutes also passed.
6th 10 minutes passed as well.
The 8th hour was officially over.
Most of the candidates were able to fend off the Zergs without too much risk, but nearly 100 people were still eliminated from the competition. As the 9th hour started, there were only about 300 people left.
BOOM-!
As soon as it started, from inside the planet passage, there was a loud bang. A very large Zerg appeared and the length of its body reached 10 meters. Most importantly, its body was covered with thick armor, it was very thick.
The Artillery fire from the Astra Militarum was non-stop. One round of Artillery went down and the shells swept at the body of this heavily Armored Zerg, however, it just made its body shake slightly, but there was no harm.
At the same time, the Nydus Worms did not disappear, they continued to dig the ground to attack. The test faced by the candidates was even more severe.
BOOM-!, BOOM-!, BOOM-!, BOOM...
This Ultralisk weighed a lot. With each step, it could bring a slight vibration to the ground underneath.
"Although the armor of this new type of Zerg is very thick, it is roughly estimated that it is at least about half a meter." Based on the destructive power of shells on the Ultralisk, the scientists quickly calculated the thickness of the armor.
"But the speed is very slow, only about 5 meters per second. To get to this side, it will take at least five minutes." Scientists made a preliminary judgment.
However, in the next moment, everyone saw an astonishing image. The Zergs next to the Ultralisk didn't rush over frantically, instead, they stopped and pushed the Ultralisk forward. Being pushed by dozens of Zergs, the speed of the Ultralisk was significantly faster, it rumbled like a steam car driving over.
"Concentrated Artillery Bombardment, blast away the Zerg pushing it forward," Cross ordered.
One shell after another changed its target toward the Zerg that was pushing the Ultralisk. However, another unexpected thing happened, as the shells were about to hit, the Ultralisk suddenly expanded. It expanded a thick pair of armor on its back, covering all the surrounding Zergs.
The shells falling on this heavy armor just made an explosive sound and there was no damage.
Seeing this scene, their expressions became somewhat gloomy, there was nothing they could do, so they could only watch. The Ultralisk was using its thick armor to shelter the dozens of Zergs in the surrounding area while quickly swooping this way.
"Let's just shoot straight at them with the M.G. Their armors can block the Shell, but they can't block the Bullet." A commander suggested.
"Okay, the Artillery will hit the other Zergs to slow them down, prepare the M.G., aim at these Ultralisk, and hit them hard," Cross ordered.
After the Ultralisk had reached the optimal range of 2 kilometers. 5 more units of M.Gs had been added. There were a total of 10 M.Gs, which were blooming with red fire. All of the large-caliber Bullets were continuously shot at the Ultralisks.
DANG-!, DANG-!, DANG-!, DANG...
As the Bullets landed on the Ultralisks, it made a crisp sound, so it didn't seem to do much damage.
"Keep it up, don't stop." Cross shouted: "I don't believe that the armor of these Ultralisk is so tough. Is it harder than steel?"
The firepower from the 10 M.G. was continuous.
TU-!, TU-!, TU-!, TU-!, TU...
Countless blasts were made and countless bullets were fired. These were not ordinary bullets, instead, it was a specially built large caliber bullet.
In the end, when the Ultralisk was 300 meters away from the wall, an Ultralisk at the front couldn't hold on anymore.