For first time since Chell locates GLaDOS again after the fall, Cave Johnson addresses the recorded ghost of Caroline, and GLaDOS blurts out 'Yes sir, Mr. Meanwhile, ancient recordings of Cave Johnson's self-confident rambling continue, as he relates anecdotes, argues with his staff, and exhorts the test subjects to keep going. With no other choice, Chell skewers GLaDOS onto herВ Portal GunВ and continues through the Johnson-era test chambers. Chell activates the flow of theВ Repulsion Gel, and begins testing in the first Enrichment Sphere.Д¬hell manages to find GLaDOS being pecked at by the bird. The bird abducts potato-GLaDOS with the AI still attached to it, and flies off into the distance.Д¬hell is left alone to wander around Aperture's 1950's laboratories, where she is guided by pre-recorded messages fromВ Cave Johnson, former CEO of Aperture, and occasionally, his assistant,В Caroline. A long splinter of metal from the casing of the elevator has speared GLaDOS' potato body, preventing it from smashing on the packed gravel floor, but it has also brought the potato to the notice of the bird. GLaDOS is unenthusiastic about their chances of surviving their trip underneath the labs She herself is even unaware of how far downВ ApertureВ really goes, and has no idea what to expect.ДЄfter a short length of time, Chell regains consciousness and is greeted with the inexplicable sight of GLaDOS being menaced by a large bird. At fully four kilometers deep, the fall gives the two characters plenty of time to come to terms with their new situation in regards to each other. Unexpectedly, it detaches from its station, and plunges into the bowels of Aperture Labs.Д¬hell and GLaDOS fall down the disused length of what used to be a much larger elevator shaft. Finding herself once again incapacitated by Wheatley, GLaDOS bitterly scolds him as 'the moron they built to make (her) an idiot.' Wheatley is humiliated and furious, and hurls GLaDOS into the lift with Chell before beating the lift into the floor of the control room. She recalls her distant past, when Aperture Science created Wheatley with the strict purpose of impairing GLaDOS with self-destructively stupid ideas. GLaDOS' personality core is abandoned on the floor, and Wheatley, manically happy with his newfound competence, activates the lift to bring Chell's to the surface.ДЄs Wheatley continues his tirade, GLaDOS realizes that she has met him before. Chell and Wheatley force a core transfer on GLaDOS so Wheatley can take control of the facility, ultimately leading to his and Chell's escape. This chapter includes GLaDOS' Test Chambers 18 - 21, out of a total of 22.Д«efore GLaDOS can kill Chell, she and Wheatley escape, eventually sabotaging GLaDOS' turret and neurotoxin manufacturing facilities. GLaDOS once again attempts to make Chell stop progress by making her feel bad, and shortly after, decides to include Chell's unknown parents into their conversations. GLaDOS also makes mention of finding two people with Chell's last name, a man and a woman, coincidentally.Д¬hell is given a 'surprise' as hinted by GLaDOS, which is nothing more than the complete absence of a surprise, except for a puff of confetti. Meanwhile, Wheatley makes a plan to escape, while GLaDOS spouts out information regarding the building, and makes another attempt to trick Chell. Chell is put through more of GLaDOS' tests through chambers 9 - 17 Hard Light Bridges and sentry turrets are introduced to the player.

Portal 2 elevator shaft