He didn't know how much time has passed. He have been burning the rats and installing turrets whenever he got the chance.
The heat is making him sweat despite his enhanced body. Each time the flames became dangerously spread out, the heat is just getting intense. He have to use one of the guns specializing on neutralizing the flames just to stop the fires from spreading more.
He have made sure to set the flame's temperature to 3,000 degrees celsius. He didn't want to be roasted by the time he found the source of this swarm.
While he was burning the rats on the most eastern side of the building, he can hear the sound of his laser turrets on the other side of this floor. He can take a guess and say that there are other waves of monsters there.
"Where the hell it is?" He asked, frustration evident in his tone.
He have been burning the wave of rats, walking forward while converting them into DP. Rinse and repeat. This is what he has been doing since the past hour.
As he got to another bend, he created another set of turret defenses here before moving forward. Meeting another wave of crazed rats, he takes aim and burned them to death.
He has been getting used to it as time passed. Seeing waves of rats and burning them makes him a bit numb to his fear, and also apprehension on their burning corpses.
It is getting easy pulling the trigger and seeing their flesh on fire as they squealed in agony. He is trying not to think about it too much. He can't stop now.
If his attention slips for a bit, he will be ganged up by these large rodents. The thought alone gives a shiver down his spine.
He goes around more on this floor, walking around. Another wave, and then he burns them again.
These rats can't even get close to him. His senses are very sharp right now. So it will be very difficult to get the jump on him. He is also covering his tracks, making sure to create laser turrets everytime he turned the corner.
Now, it is impossible to ambush him. He will be alerted everytime a horde of rats does just that.
He walks for a bit more, roaming the edge of the eastern side of this building. Then he goes a bit deeper, going right for a bit. From there, he burns all the rats that suddenly appeared on the ground.
After dealing with them and making another set of laser turrets, he squinted his eyes at the source of where they came from.
There is a large hole, and from there he can hear a lot of squeaking and snarling noises. He can see their long nails grabbing the edges of the hole, making their way to this floor.
"Finally, I see it!" He said, his eyes pointed at it seriously.
He revs up his flamethrower and spew fire at the rats trying to climb up as he took a step forward. He took more steps, getting closer to the hole as he sprays more fire on their way.
As he got to the hole, he widened his eyes and then wince in disgusts, seeing the piled up rats below.
There are many of them, and it is disgusting, and honestly revolting. The way they move and open their mouth, and their red orbs glinting maliciously is giving him the chills.
He takes the time to burn those who have been attempting to jump at him. The flame easily spreads below the ground.
After doing that, he stops spewing fire and put it down. Then he took one of the weapons he have on his dimensional storage.
This one is called as the NX2000. It is a bioweapon capable of poisoning biological creatures. It can easily counteract any attempts of regeneration and adaptation through biological or genealogical means.
"Why don't you eat this!"
He primed his weapon below the hole and charges up the gun. The trident-like muzzle compressed an eerie dark energy. The energy looks viscous, like it is a hazy liquid.
Seeing the rats that are not burned gathering up below the hole, he stops charging his shot and let it fly to the ground below.
The compressed dark energy sprays out, spreading a noxious gas that spreads all around the ground. While that is happening, he have taken a step back while storing that weapon to his dimensional storage. Then he carried the flamethrower and let spew fire on the air.
The noxious gases that NX2000 spurts is very harmful and easily spreads on the air. Intense heat can counteract it, so he makes sure to set the flames at least 5000 degrees celsius and let it spread on the air.
After waiting for some minutes, he thinks it is enough and stops spewing out flames with his flamethrower. He puts it aside and take another weapon within his storage.
This weapon is the GF-100. It is a revolver-like weapon, that have four large cannon-like muzzles, and it's chamber is a transparent glass with a lot of small marble-like things inside it. This is a futuristic weapon containing firebombs more stronger than napalm, and it acts like a grenade launcher.
He aims it a bit higher, and then hold the trigger. A whirring noise started as the four large muzzle slowly spins. Within the glass chamber, the marble-like things moves to the chute to the muzzle, then it enlarges, becoming the same size as a baseball.
It shoots out, making a parabola to the burning and noxious hole. As it fell to the ground below, the baseball sized glass ball breaks and release a flame so intense that the building might even melt if not for his nexta actions.
"Okay! Time to do this then!"
After pumping up almost a hundred of these glassy firebombs, he stops and then stares at the ground.
[Would you like to upgrade (Burned Old Floor with Holes)?]
"Yes!"
[(Burned Old Floor with Holes) upgraded to (Old Floor)]
This is his true plan. After learning that some of these rats are making holes, he decided to use these holes to exterminate them once and for all. So he didn't repair the floor this time and find one of their holes. After spreading poison within the hole, he will then burn it to the ground with those glass firebombs and then close the hole by upgrading it.
He made sure to be thorough. He upgraded it two more times.
[Would you like to upgrade (Old Floor)?]
[(Old Floor) upgraded to (Concrete Floor)]
[Would you like to upgrade (Concrete Floor)?]
[(Concrete Floor) upgraded to (Thick Concrete Floor)]
After doing that, all the flames on this floor are gone and the floor is now clean and is made of thick concrete.
He is not really satisfied with it. His upgrade is too specific for it to take care of all the floors on this building. He knows it only includes every hallway floors here, so he have to go to each room of this building and make sure to close the other holes of this building, of there are any.
He looks at his status.
[Status]
Neil Howard (Human/Male)
Upgrades : 36
"I have a lot of upgrades left. I think this is enough to close all the floors of each room on this place." He said.
After that, he leaves this area, ignoring the cries of the rats and the temperature heating up again below.