Well this is the last chapter! This one is REALLY emotional, so feel free to listen to sad music whilst you read (if that's your kinda thing). Will probably continue as a sequel but not sure cause I have other ideas in my mind but let me know what you think!

Hope you enjoy!

Rattman's footstep echoed throughout the shaft as he ran. He left the girls in the previous room, as they would be safer there than anywhere with this homicidal maniac running the facility. As he followed the line of paint he drew earlier, a voice came over the intercom 'Neurotoxin exposer will become fatal in 1 minute'. He knew he wouldn't make it. It took him about 7 minutes to reach the room with the girls (and GLaDOS knew it), but he had to try.

"Hello RAT."

"Will you just leave me alone for FIVE MINUTES?" Rattman shouted.

"I see inch of this facility…you are never alone." He tried to ignore her as he climbed out of the shaft and began to run toward the lab. "Anyway, I just thought I would update you on what happening. All of the girls have been tested, I just ran them through a few test in the chambers, and you will be happy to know that the one you call, Chell was it? She will not be continuing her testing.

"Why?" He was curious, Chell seemed to be able to go through anything that stupid robot had in store.

"To dumb it down, she was simply too stubborn. She never gave up." Rattman thought she souned annoyed when she said this.

"HA, what I hear is that you're afraid that she'll be a threat to you." Just then, a Companion Cube shot through the air and missed Rattman's had by inches.

"Oh look, it seems the Companion Cube has hostile feelings towards you. But don't worry, it will never stab you." Just then Rattman spotted the doors to lab 7A, and sprinted to it. As he opened the doors, his stomach did flips as he saw the horror that lay before him. All around him lay Aperture scientists sprawled on the floor. His eyes scanned the lab until his eyes spotted a figure slumped over the GLaDOS's control panel. He stepped cautiously toward him and as he turned it over, his face lost what little color it had left. Chell's father's eyes were closed, but he was not yet dead. Rattman's hands began to shake and tears began to form in his eyes. "Hey…wake up…please." Chell's father slowly opened his eyes, not all the way, but enough to see his friend above him.

"H-Hey…" He did not have much strength left. "*Cough* Neurotoxin…gets you every time."

"I'm sorry, I-I should have been here with you I-"

"Hey it's ok *Cough Cough* there was nothing we could do…she-she's just too powerful." Rattman could feel his friend's breathing begin to slow down. "Where…where are the girls…is Chell alright?" Rattman paused and his hands began to shake even more. He did not know what to day, he always told the truth, but could he bare to tell him what happened? How he failed to save the girls, how he failed to save Chell, how a homicidal maniac of a robot kidnapped them and brainwashed them to do her testing? He just couldn't bring himself to do it, especially not here.

"Yeah," he lied, forcing a smile, "Yeah I-I got them out safely, they're okay." He bit on his cheek to keep the tears from coming out.

"Good…*Cough*…take care of her for me will you? You're…the closest thing she has*Cough* to a parent." As Chell's father began to cough and hack viciously, the tears could no longer be confined in Rattman's eyes.

"Please…please don't do this to me. You can't go you just can't. You're the only one who ever acknowledged me for who I was. You saw me more than a weirdo." He gripped Chell's father's lab coat until his knuckles turned white.

"Hey…*Cough*…you were never-a-a weirdo. You…are the most *Cough* creative-and most intelligent man I know…" His voice began to trail off, he knew what was coming, and he was prepared. Rattman was not.

"No, no, no, NO, NO! PLEASE PLEASE DON'T DO THIS! PLEASE!" He could not say anything else, and his tears overcame him.

"I'm sorry…to you….to Chell…tell her….I'm so…" And that was the last words that ecaped from Chell's father's mouth.

"NO NO NO NO NO PLEASE NO!" Rattman could not form words now, and he broke into violent sobbing as he clutched his friend. It was silent in Lab 7A, except for the echoed crying from Rattman. After about 5 minutes, Rattman's sobs subsided, he could not cry anymore.

"I'm sorry." A voice came behind him, and when he turned around he saw a Companion Cube.

"Don't be," he answered back, "it's not your fault."

"It's not yours either."

"Oh I'm sorry, am I interrupting something?" A large monitor turned on, and on it was an image of GLaDOS. "Oh, look, a little rat talking to a cube.

"You." One could almost see the venom dripping from the single syllable that Rattman spitted out.

"Oh darn, know what am I going to do with all of these bodies. Expecially this one." As she spoke, a large metal claw grabbed Chell's father and lifted it high in the air.

"PUT. HIM. DOWN. NOW!"

"That's a possibility. Another is putting him in the Aperture Science Incinerator-" Now Rattman had reached his limit. Hands shaking beyond control, he grabbed the nearest chair and hurled it at the monitor. It landed square on the screen and caused the screen to fall to the ground. Rattman then grabbed a wrench and continuously stabbed the screen, breaking every single inch of glass he could find.

"YOU MONSTER! YOU RUINED EVERYHTING! I KNEW THIS WOULD HAPPEN! I TOLD THEM YOU WERE NOTHING BUT A SICK TWISTED MANIAC! THEY DIDN'T LISTEN! THEY THOUSGHT IT WAS JUST ANOTHER CRAZY IDEA FROM CRAZY RATTMAN! AND KNOW LOOK WHAT HAPPENED, YOU KILLED THEM ALL. KILLED THEM LIKE NOTHING. YOU'RE JUST A SICK TWISTED SHELL! YOU HEAR ME? YOU'RE! A! SICK! TWISTED! MANIAC!"

After that he pounded furiously at the surrounding metal, he knew it wasn't her but it was the closest thing to it. As his anger reached the climax he grabbed the monitor and flung it across the room into the control panel. As it collided, shots of electricity went everywhere, and all of the lights in the lab went out.

Rattman when on his knees and panted for several minutes as sweat dripped from every pore in his body. The Companion Cube slid next to him, and he patted it.

"Are you finished?" GLaDOS asked.

"I have *puff* have nothing more to say to you." He shakily stood up and leaned against the cube.

"Good, because since you so graciously told me what I am, I think you ought to know what you are." Rattman ignored her and continued to catch his breath. "You are a rat…a filthy diseased rat. And you need to be exterminated." As she spoke, several turrents came from panels in all directions and locked on to Rattman. Before they had time to shoot however the Companion Cube slide to the wall and opened a secret panel.

"Hurry, this leads you to anywhere in the facility. She can't find you in here!" Rattman then climbed into the wall, and with one last look at his friend, he disappeared into the darkness. The game of cat and rat had begun.