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Portal 2 Hints

Neurotoxin Generator

  • 1 of 5: Move along the walkway until you get to the huge neurotoxin generator chamber, then keep going until you reach an airlock.
  • 2 of 5: Past it, you can view rejected turrets being dropped into a vast grinding mechanism. Past that, enter the small lift and ride it up to a higher walkway.
  • 3 of 5: When Wheatley starts talking about opening the door labeled "Implosion Observation Annex," look around for a way to do so.
  • 4 of 5: Past the door, go up the stairs to the observation platform, then look for a way to sabotage the neurotoxin generator.
  • 5 of 5: Go back down the stairs and over to the door to the room that Wheatley is in. That'll get you sucked into the Tube System region.