Chapter 7: Two Portals and Poison Floors

Author's Note: Thank you to all who have been staying with the story. I appreciate any and all reviews. On with the testing!

The Doctor stepped into Test Chamber 11. He heard the all too familiar sound of the fixed portal gun from the fourth chamber. He examined his obstacles that were in front of him. The liquid poison covered the floor. Although he has encountered it before, he never saw it in this quantity. Based on the color of it, he thought it was a thick liquid form of a neurotoxin, a substance that he has found traces of in GLaDOS' chamber. The Doctor also saw a Thermal Discouragement Beam, and he found another portal gun, this time shooting orange portals at 90 degree intervals. He began planning his approach.

"The Enrichment Center promises to always provide a safe testing environment. In dangerous testing environments, the Enrichment Center promises to always provide useful advice. For instance, the floor will kill you, try to avoid it," explained the GLaDOS recording. The Doctor ignored the recording, and began his challenge.

The Doctor shot his blue portal on the wall next to him, as he was vastly separated from the rest of the chamber. He waited for the orange portal to open up to platform with a button pedestal on it. He walked through when the opportunity arrived, and pressed the button. A window opened revealing clear access to the Thermal Discouragement Beam. He shot his blue portal where the beam touched the wall, and another orange portal opened up directly across the receiver, thus activating platform that was moving back and forth from where the orange portal was to the portal gun.

As soon as the orange portal switched locations, The Doctor shot a blue portal right where the orange portal used to be. Luckily, the effects of the Beam were permanent on the platform. He then waited for the orange portal to be shot at his platform. He stepped onto the moving platform, thankful that it was there. He then stepped onto the pedestal, and grabbed the portal gun.

The gun wasn't much of a gun, but an attachment. The two merged together to form a dual portal device.

"The device has been modified to manufacture two linked portal at once. As part of an optional test protocol, we are pleased to present an amusing fact. The device is now more valuable than the organs and combined income of-of-of-of…" said GLaDOS, unable to cope with the fact that the Doctor was from another planet.

The Doctor continued to experiment with his upgraded device. He realized that the portal gun now had two separate triggers, one for each color, and it didn't take long for him to get accustomed to the changes. A button appeared in front of him, and he triggered another opening window. He fired an orange portal on the wall behind the window, and the blue portal behind him.

The Doctor stepped through the blue portal after going across the liquid floor. He arrived safe and sound behind the window, and into the gridlock.

Meanwhile…

GLaDOS was furious. She had been tricked. The Doctor had managed to keep the sonic screwdriver. She needed the screwdriver. It was her only way to properly scan new test subjects without the medical exam. Orange and Blue were still searching anything that could have that screwdriver, but GLaDOS was certain the Doctor still had it.

"That alien from Gallifrey will pay for tricking me. I thought I learned my lesson after the Monster escaped incineration and murdered me, but apparently I was wrong," said GLaDOS aloud. She wanted the two robots to hear her.

"Orange!" she yelled. P-Body looked up and waved. "I want you to check the neurotoxin emitters and make sure they are up and running!" P-Body grabbed his portal gun and ran to the neurotoxin factory.

"Blue!" she shouted. Atlas looked up at GLaDOS, and also waved. "I want you to turn up the incinerator to full blast for the Doctor's Companion Cube for when he arrives at Chamber Seventeen!" Atlas grabbed his portal gun and ran to the incinerator.

"The Doctor will pay for what he has done. Nothing will stand between me and the screwdriver," said GLaDOS. She leaned back, and reviewed the Doctor's progress. "Six more chambers until his death. No living creature can survive deadly neurotoxin, unless the turrets kill him first in Sixteen, but that is very unlikely." GLaDOS felt a small spark inside her, an idea. Revenge, she thought. Revenge will be so sweet. Almost as sweet as cake. No, more sweet than cake. I never got revenge over the Monster. But I will get my revenge on the Doctor.