Test chamber 1 is the first chamber to use the Thermal Discouragement Beam alongside with portals. This chapter includes GLaDOS' Test Chambers 1 to 8. They primarily include Thermal Discouragement Beams and Aerial Faith Plates.

Central AI Chamber and Main Breaker Room.

Decrepit Test Chamber 00 through 08 (out of 19).

Aperture Science Extended Relaxation Center.

The test chambers and Central AI chamber are the same from Portal, albeit heavily damaged and decrepit. During the escape attempt GLaDOS is accidentally reawakened by Wheatley, who is separated from Chell and GLaDOS promptly resumes forcing Chell to complete test chambers. He smashes the chamber through a wall and tells Chell to look for ' a gun that makes holes.' The Aperture Science facility is overgrown and badly damaged. Wheatley, fearing he will be blamed by 'management' for the incident, plans to escape. Chell learns that the facility's reserve power has been lost and is instructed to prepare for reactor core meltdown. Afterwards, Chell meets Wheatley for the first time. During this second awakening, the announcer glitches saying that they 'have been in suspension for.' followed by a glitched message repeating nines. Chell is then instructed to return to bed.Д«etween 50 and 50,000 years later (the exact time is never made clear), Chell is awakened again. In compliance with 'state and federal regulations,' Chell is instructed to perform a mandatory physical and mental wellness exercise which is used to teach the player the standard controls. The inside of Chells Relaxation Chamber after she is woken up.Д¬hell, Wheatley, and the newly-reawakened GlaDOS.ДЇifty days after she is put in stasis, Chell is awakened by an unidentified announcer. Single-player campaign Chapter 1: The Courtesy Call 1.9 Chapter 9: The Part Where He Kills You.The single-player campaign is set directly after Portal and Portal 2: Lab Rat, and right before the cooperative campaign. The co-op portion of the game follows ATLAS and P-body, whom GLaDOS accompanies through the Cooperation Testing Initiative. Portal 2 almost directly follows the events of Portal from Chell's perspective, although being set more than 50,000 years after the events of Portal. This article describes the Portal 2 storyline, chapter by chapter. For more instructions visit Half-Life Wiki:Images. To illustrate the article add one or more relevant images or upload them from canonical / official sources.

This article would greatly benefit from the addition of more images. Gameplay tactics, trivia and walkthrough information should not be included, unless they are related to the plot instead add it to its respective chapter article. This article is not a walkthrough, but a plot summary. Visit our Cleanup Project for more details and, please, notify the administrators before removing this template. You can help by correcting spelling and grammar, removing factual errors, rewriting sections to ensure they are clear and concise, and moving some elements when appropriate. This article has yet to be cleaned up to a higher standard of quality.

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