The final three Vitrified Doors can be found in this area.Īlthough we haven't tested all of the cheats from Portal 1, most of these cheats Enter this door to find a secret hallway that leads to a dock (where you get the 'Ship Overboard' trophy). In the corner of this office is a cabinet with a door behind it. You can use a portal to get high above the Control Room and enter a small office.

When Cave starts talking about testing on hobos, below one of the test spheres and a giant Aperture logo is a room marked 'CONTROL ROOM' in yellow lettering. Then, play through the level until you reach the 1971-era test facility. Listen to the audio that plays when you hit the buttons in front of each of the sealed doors. On one end of the chasm is a platform with three of the Vitrified Doors. You must use the elevator shaft as a gravity boost to get across a chasm. After flying through the Aperture logo, you will come to an area with a tall elevator. At the beginning of Chapter 6, you will have to penetrate the 1960s Aperture facility. In Chapter 6: The Fall, there are six sealed metal doors marked 'VITRIFIED' (Vitrified Doors) that have buttons in front of them that play unique audio clips of Cave speaking.

Portal 2 incinerator room