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The Orange Box: Portal Hints

Chamber 18 Advanced

  • 1 of 13: When you come to the first big gap area, you'll find it impossible to open a portal on the other side since it's all metal.
  • 2 of 13: If you set up your portal on the ledge as you flew across the gap, it'll be easy to get up onto that ledge.
  • 3 of 13: Just toss an orange portal onto the nearby concrete wall, a bit below your floor level, and jump through it.
  • 4 of 13: Now you need to make your way across to the ledge with the button-opened door on it.
  • 5 of 13: Once there, you can use the standard way of getting across to the button's ledge. (See below for a reminder.)
  • 6 of 13: In the room past the button ledge, use the button post and crouch-walk under the extending wall segment to enter the room beyond.
  • 7 of 13: Stay out of sight of the turrets while deciding how to dispose of them now that there's no energy orb firer.
  • 8 of 13: It's possible to get to the button room from the platform you pushed the last of the turrets off of. If you don't want to, you can portal back over to the entry area and ride the moving platform across.
  • 9 of 13: Once in the button room, you're going to have to deal with the fact that the lower platform you gain portal-fling momentum from is next to the button room now instead of where it used to be.
  • 10 of 13: After you get to the cube, you can use the standard way of getting it to the door's button, and of getting through the door. (See below for reminders.)
  • 11 of 13: Go through the door and drop down to a slightly lower floor to reach the final section of this chamber.
  • 12 of 13: It works just like it did in the standard version, but with the twist that platforms will disappear after you use them, so you have to get everything right the first time. See the link below if you need a reminder on how it works.
  • 13 of 13: If you can ever make it while under the "everything perfect the first time" restriction, you'll be able to enter the elevator and finish the hardest advanced chamber at last!