So far, it's pretty good. (We've gotten through the first season, and the "recap" episode at the start of the second season is actually entertaining enough on its own merits that I'd recommend NOT skipping over it.)

I like that it toys with a lot of familiar tropes of anime/manga/JRPGs/visual novels but isn't beholden to them. I'd cite examples, but then I'm really getting into spoiler territory.

Of course, I won't really know for sure what to think of the series as a whole until we reach the end, but we're not quite there yet. And even if the ending COULD turn out to be a dud, at least the journey so far was interesting.