It was good enough for what it was, but nothing special. Personally I'm not a fan of inconclusive endings or just straight up "bad" endings. As a form of entertainment they rarely feel satisfying in any way, yet so many writers can't help themselves thinking it's the best shit, perhaps because they'd rather hear interesting fan theories rather than create a conclusive ending they felt was probably not that good. Sure you want people to discuss it and contemplate it, but if there's really no satisfying end to said thought chain, or even any kind of correct conclusion to be reached, it's doesn't really serve any purpose outside wanting to be pseudo-intellectual and not having to come up with a believable and interesting conclusion to your story. A cop-out so to speak. I find it far more satisfying to theorize during the game, and have the ending reveal whether I was right. Leaving things open-ended is just blue-balling.