There is nothing particularly special about The Oubliette. You just have to get through it once. Everything else you can do here (secrets, challenges, item pickup) is optional, although some of that will be necessary for accessing optional content later.
There is one thing I can think of that you might have missed. Spoiler, obviously, so explore on your own first if you like that part of the game.
Click here to view the secret text
×Have you tried going back up the stairs in the entrance of The Oubliette where you first came in?
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106th Skywatcher
[Last edited by mauvebutterfly at 04-10-2018 02:00 AM]