Portal 2 Hints

How can I open the exit door?

• 1 of 8: If you're not on the starting platform, get back onto it using portals. (Put one on the platform's ceiling, and put the other one on a portal-friendly wall or floor section that you can reach.)
• 2 of 8: Look across the chamber and a bit to the left to see the exit door's alcove.
• 3 of 8: Notice that there's a laser receptacle on the wall to the left of the alcove. There are also two blue checkmarks just above the exit door.
• 4 of 8: Just above each checkmark is a white square. One of them has a single dot in it, and the other one has two dots.
• 5 of 8: If you look on the floor near the edge of the starting platform, you'll see a laser relay next to a white square with two dots on it.
• 6 of 8: If you look off to the right, you'll see a laser emitter in the distance. To the left of it is a high-up ledge that has a white square on it with a single dot in it.
• 7 of 8: Examine the ledge carefully in Zoom mode to see that it has a laser relay on it.
• 8 of 8: You're going to need to use redirection cubes to get the laser beam to go through two relays and into the receptacle near the exit alcove.
  • How can I get all of the redirection cubes down to the main floor?
  • How can I get the laser redirected into the first relay?
  • How can I get the laser redirected into the second relay?
  • How can I redirect the laser from the second relay to the receptacle?

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