Hi Mark, if I recall correctly (this game was from a while ago) there's only one ending for the main story, but there should be an additional infinite mode that unlocks afterwards with a bit of extra story content. Hope that helps!
Ah, I see. Well, I got the impression was that much of the context was left vague on purpose, like in Lucah and in the other games. Confusing, but thought-provoking. I wasn't quite sure what to make of this particular story other than the fact that the protagonist definitely isn't a good guy. And I'm assuming that the ending played out exactly how one would assume it would.