After completing Pirate's Hideout, there are more puzzle levels to find. Remember that you need to walk there; don't use restore, or you may accidentally go back to a time before you completed Pirate's Hideout.
When you return to the City after completing Pirate's Hideout, the first place you should go is:
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×Through the Gate of Firstity.
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×Enter the building in 2N5W.
After that, you should then return to:
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×The Infohut (that's where the first person you met was).
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×To get back there, walk south from The City : Entrance.
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×After talking to the Infohut guy, climb down the rope in Infohut 1S1W...