Don't Stop Achieving Trivia Quiz

Answer: Apple

After being awoken from stasis for hundreds of years, Chell meets Wheatley, knocking at the door to her stasis chamber. Wheatley informs Chell that "most test subjects do experience some cognitive deterioration after a few months in suspension", and asks her to say the word 'apple' to make sure her brain is still functioning properly.

However, the on-screen prompt to say 'apple' only results in Chell jumping, to Wheatley's displeasure. As a warning siren goes off, Wheatley cuts the conversation short and proceeds to control the chamber and relocate it to a nearby docking station.

However, the chamber, and those around it, start to disintegrate as Wheatley tries to steer it between girders and pylons. Bursting through the wall above the docking station, Chell finds herself in the relaxation vault from the beginning of the previous game.

Answer: Incinerator room

When Wheatley and Chell locate the circuit breaker room beneath GLaDOS' chamber, he accidentally reactivates the malevolent robot, and she disposes of Chell in the nearby incinerator chute. Fortunately for Chell, she lands on a solid mass (thanks to her long-fall boots). Encouraged by GLaDOS, Chell proceeds to navigate her way through the incinerator room to find the dual portal device underneath a pile of rubble.

When she acquires it, GLaDOS informs her that testing is about to begin, for the next sixty years.

Answer: In a potato battery

Overcome with power, Wheatley turns on Chell, saying how she was selfish during their efforts to take over the facility, and that all he did was sacrifice himself while she stood by and did nothing. In his rage, he implants GLaDOS' robotic consciousness into a potato battery and throws both her and Chell down a chute to the very depths of Aperture Laboratories, far beneath the earth.

At the bottom, GLaDOS is carried off by a bird (she is a potato, after all), and Chell is left to find a way back up to the facility. On her way, Chell finds herself completing test chambers from years gone by, accompanied by a recorded voice of the late CEO of Aperture Laboratories, the eccentric and enigmatic Cave Johnson.

Answer: Caroline

Though Caroline is only mentioned a few times by Cave Johnson, and her voice is heard even less, GLaDOS (when she and Chell are reunited and reluctantly work together to take back Aperture Laboratories from Wheatley) is reminded of something from deep within her memory banks. During the course of the game, she begins to remember more and more, until she realises just who Caroline was, or is. Caroline was Cave Johnson's personal assistant, and in his last days, he had Caroline's consciousness implanted into a robotic construction so that she may live on forever and look after the facility. GLaDOS realises that she is Caroline, or at least has part of Caroline in her personality.

At the end of the game, GLaDOS deletes Caroline from her memory banks and lets Chell leave Aperture Laboratories, to stop her ruining GLaDOS' precious science facility.

Answer: Inversion gel

In the depths of Aperture Laboratories, there are three special gels that were once used during tests in years gone by. The blue repulsion gel, when applied to a surface, causes anything that drops onto it to bounce. The orange propulsion gel causes anything to move along it to speed up.

The white conversion gel enables a surface that would otherwise be unable to have a portal created on it to be portal-able. Using a combination of these three gels, Chell navigates her way back up through the testing spheres, ventilation shafts and maintenance areas to reach the new Wheatley Laboratories.

Answer: Moon dust poisoning

The conversion gel is primarily composed of moon rocks, that were discovered to be a very good conductor of portals. Inspired by this, Cave Johnson himself was heavily involved in the production of the conversion gel, but unfortunately, the exposure to the moon dust proved hazardous to his health, and he contracted a fatal respiratory disease.

It was in his dying days that Cave Johnson ordered his employees to build a computer that could hold his consciousness and thereby keep him from dying completely.

He died before it was completed, however, and Caroline was instead implanted into the computer.

Answer: Pneumatic Diversity Vents

Chell encounters Thermal Discouragement Beams first, and uses Discouragement Redirection Cubes to aim these beams to receptors that activate doors and platforms. The Hard Light Bridges are artificial surfaces created by sunlight that GLaDOS pumps in from the outside. Excursion Funnels are a sort of tractor beam that allow any objects that enter it to be transported across large gaps, to high up ledges, or to wherever is needed.

In some chambers, the funnels can be reversed, carrying objects in the opposite direction.

Answer: The Part Where He Kills You

When Wheatley reveals his 'surprise', Chapter 9 begins. He reveals that this is "the part where I kill you". GLaDOS points out that this is "the part where he kills us". On the screen, the words "Chapter 9: The Part Where He Kills You" appear, and on the first playthrough of the game, the achievement/trophy "The Part Where He Kills You" is awarded. Of course, Chell and GLaDOS don't die, and manage to portal out of harm's way before Wheatley has a chance to realise.

Answer: Stephen Merchant

During the initial stages of production, Valve employee Richard Lord lent his voice to Wheatley. In demonstrations for gaming conventions, it was Lord's British voice that was showcased for the character of Wheatley. However, it was British writer and comedian Stephen Merchant (known for his work with Ricky Gervais on 'The Office' and 'Extras' and their record-breaking podcasts) who provided his distinct Bristolian accent for the character. Merchant was not Valve's first choice for Wheatley, however.

The company first approached Richard Ayoade (known for playing Maurice Moss in 'The IT Crowd'), but due to scheduling conflicts, he was unable to play the part.

Answer: Peer Review

Released for free across all platforms, 'Peer Review' added bonus challenges for the single-player campaign and the cooperative campaign, as well as a new course for cooperative mode, consisting of nine test chambers. The DLC was released on October 4, 2011.