Guild of Writers

I made it up, and back down, but now I can't get up again. Is it possible to repeat the building without deleting the sav?

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If you got down via the ladder, and if you opened the door at the bottom of the ladder, you can just use the ladder to get back up again. If you want to use the pillars to get up, you can do that too - just go to the first room and enter the appropriate code to position them; then progress through the building like before.

And congratulations!