There are also Sigma's cat puns for a brief conversation. That and the funyarinpa reference made the game an automatic 10/10 to me.Anyway, I beat the game about three hours ago and I gotta say that I'm not completely satisfied with the ending, but I believe it makes kinda sense, I guess. I loved the game, even though it still leaves some questions unanswered
Either way, one of the "endings" did completely blow my mind, as in I really wasn't expecting that, because I got it before of certain reveals and I absolutely didn't understand what was going on (even though then I obviously guessed some stuff). If you got that ending, I'm sure you'll understand which one I'm talking about.
I was happy to see that the theory I reflected upon for months was confirmed, and that other theories I thought of during the game were right too. My theories generally never end up being correct so that was nice for once.