I wondered about the significance of there being two of that red-and-yellow pendant thing. Did the protagonist need them both for some ritual/to assert their dominance? Actually now I'm thinking that it gave the guild leader some kind of power, and now the protagonist has two of them, therefore twice as much of it. (Or maybe it was just two halves of some extremely valuable item that needed to be put back together.)
I agree that there are a lot of ways to interpret the ending. In any case, it was pretty surprising.
Good work!