Oh man, what a twist. I got the gravestone ending on my first playthrough and I feel that sufficed; have briefly looked over the other endings afterwards but I feel this was the best one to have gotten on my first playthrough. The twist was gut-punching; and that's a compliment! It's great writing when a twist feels so, shocking. Not sure if the experience would've been the same with the other endings, but the way you didn't know until the very end really puts you in the same state of denial as the mc, making the story all that much more potent. All in all, a great, moving game.