As he expected, there are some of the empty rooms on this floor that have a hole where the rats can get through. He have taken care of that the same way he did on the first.
It's been some hours since then. The skies outside the building has become red, the sun nearing it's fall as he takes care of everything on this floor.
His cautious steps have become more faster. He is still treading the path slowly, but it is two times faster than his first steps on this morning.
He is just destroying another hole on a certain room with broken walls in it, which shows the outside area. The light of the sunset shines through the west as he takes care of every monsters within the hole with noxious gas and flames.
After upgrading it three times to turn it into a Thick Concrete Floor, he takes the time to lean on the wall to rest. His hand is still prepped up on the flamethrower in case some remaining monsters get to him.
He have gone to nine rooms. He only have nine upgrades remaining.
"Hah... I've taken care of every room on this side. I am hearing something on the distance, but that's the only direction where I hear the turrets at."
He can guess why. The rats are in there, and that might be the last one.
"Okay. I have to be prepared. I hope this finishes it!"
After taking another deep breathe, he walks to that direction.
~~o~~
The raging sounds of lasers reaches his ears as he arrives at the location. Along the way, he converted all the rat corpses he encountered.
"Goddamn... that's a lot..." He felt revolted at the sight of the mountain of corpses.
The heavy stench of filth and blood strongly hits his nostrils. He felt like retching at the smell alone. He quickly converts everything into points before he did just that before looking at the hordes of rats at the distance.
He can see the wave of rats coming to that hallway, which means the next hole must be in there.
He primed his flamethrower and pointed it at the large swarm approaching. He initiated the fight, starting by spewing flames on their way. The intense flames hits the furred flesh of the large rodents, letting their squeals of death resounds on the hallway.
As he take a step forward, he is also feeling a bit relieved. He can't hear any shots on the distance, which means this is the last one.
As he got closer and closer, he arrives at the end of this hallway, which have another two paths on left and right, and a large broken entrance on the front. Within the room, he can see a large room with a lot of the red glinting eyes staring at him in hostility. Behind these waves of rats, is a hole larger than the ones he closes awhile ago.
"HERE I GOOOOOOOOO!"
He screamed, shooting more flames at the rats within.
Along with it, he also installed turrets on his sides to look for the left and right hallways. He also put wall turrets just for the added firepower.
He stood his ground in front of the room, dealing casualties on the other side. He didn't dare go inside and kill them all in this spot.
After awhile, he finally felt a bit confident and took a step forward. He can still hear some of rats below trying to climb up and failing due to the heat of the floor. He can also feel it within his feet.
He quickly converted everything into DP before putting his focus on the large hole. It can be truly called as a large wall. Within the wall is a den of malicious monsters, staring at him in berserk.
He quickly takes the NX2000 in his storage and charge the poisons. The rats seems to be trying to stop him, but the floor is too hot for their clawed hands, giving him enough time to charge it up and spray the noxious gas on the hole. Then he quickly retreats as the noxious gas quickly spreads below and to the surface.
He put the NX2000 back to the storage and use his flamethrower to prevent the poison to spread to him. He did it for several minutes.
'With this, it is done!' His eyes narrowed, making sure to be more alert than ever.
He can still recall the term "A cornered rat will do drastic things". So he won't let his guard down.
And for his benefit, he is right on that.
Just as he spewing flames within the hole, the whole ground shakes violently. It's like an earthquake that suddenly occurs.
He let out a surprise gasp as his footing became a bit unstable. Thanks to his upgrade to his body, he managed to recover quickly. Though he stops shooting fire due to that distraction.
*SQUEEEEEEEEEEEEEEEEEEEE
Then, an ear piercing scream hits him, making him rebound in his position. Within the hole, a larger rodent that is three meters high glared at him, it's red orbs glaring at him angrily. It's sharp teeth glinted in deadly manner, as if to promise him a painful death.
It is a very large rat with brownish fur and red orbs as eyes. It's nails are too long and appears like it was made from metal. It's fur, which is matted with stains and filth, looks firm and tough.
It let out another screech which makes him wince in pain. The sound it makes is loud enough that he is feeling his ears ringing.
"Shit!"
He uses his flamethrower at it, bathing it with flames that are more than 2,000 degrees celsius in heat. The largest rodent he saw on this place screamed in pain, though it seems like it is enduring it.
Then he widened his eyes as he saw what it is going to do next. He quickly stops shooting the flames, predicting that he won't be able to dodge in time he tried to do so.
He jumps out of the way, as the large brown rodent did a reckless charge. It roared as it hits the already broken entrance, destroying it a lot more and causing pieces of rubbles to fly around.
"Ooof!" He let out an undignified squeal as he landed on the floor. He heard an unpleasant bending sound on his flamethrower.
He stood up quickly and look at his flamethrower. He can see that the muzzle is still fine, but the tip of it is a bit deformed.
He would have tried to change it, but he can't because the rat is not going to let him.
The large rat is being pelted by the lasers of both the installed turrets and wall turrets. Though it just screamed it's rage at them, seemingly trying to defy the odds with just it's rage.
In a single sweep, it destroyed the nanotech turrets. It's steel-like claws even piercing through the olden walls like it is nothing.
Without rest, it also did a second sweep on his direction. He took a step back, barely missing it by his nose.
The rat squeaks angrily, letting out a noise so loud he felt like he is going deaf by it.
"Ah!" He gasps in surprise.
He felt his world spinning, disoriented by the intense noise of it's scream. His mind is still thinking about his safety, so despite feeling dizzy, he still jump backwards just in time to dodge another swipe from the rat.
Without minding it anymore, he takes off the flamethrower from his arms as he landed on the ground. Then, before the rat can charge at him, he throws the flamethrower to the rat.
"TAKE THAT!!!!"
With his enhanced strength, he managed to throw it like a baseball pitch. The rat seems to have a mind to swipe it aside with it's claws.
Though, as it hits the energy tanker of that flamethrower, it sparks in an instant before causing a burst of explosion.
Having expected that much, Neil turned around already and is running away from it. His destination is on the other laser turrets behind him.
He felt the shock of the explosion behind him, and felt the walls and ceilings shaking dangerously. He felt a bit uncomfortable, thinking that the building might collapse on him.
But he shakes that thought away and continue running. He can feel the presence of the large brown rodent approaching him again.
"What the fuck is this!?" He yelled in indignation.
The fight has only just begun.