×basically, you need to force the Gentryii in such a way that you can freely move behind it. Remember that the chain of a Gentryii is impassable, even for the Gentryii
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×use the corridor leading to the south exit. Here, you have to manipulate the Gentryii in such a way that you can sneak past it into the South Chamber, then use the space in that room to force the Gentryii in such a location that it is blocked from moving by its own chain and the walls, allowing you to sneak back northwards
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×oh, just to be clear, you do NOT need the Aumtlich to complete this challenge.