Ok so coming back here now, I think I got all the "main" endings for the game, with a few of the extra/joke ones. Took me 33 hours.
To be honest the endings themselves didn't have as much impact on me as I expected, but I really, really enjoyed the journey up to these endings, and I'm the type of person who cares more about the journey than the destination anyway. A lot of fun twists and turns, with some interesting attempts to add more layers to stuff I normally wouldn't have taken that seriously. Route B was a little boring at first but I thought the pay off around the end was good and things only got wilder from there.
Talking about gameplay only, I wasn't too fond of the side quests. I'd put them in the same tier as Final Fantasy XV, which I think also has really bland and tedious side quests, but the writing side of them in Nier is much better, with the NPCs having more personality. A lot of the side quests ending in some kind of existential crisis or dilemma got a little odd though, not that I didn't appreciate the attempt at examining the overall themes the game had from a bunch of different angles. I think RPGs can be very inconsistent about keeping the writing in line with their themes and examining it in different ways (though I think several RPG developers have improved considerably at this in the past few years), so ones that get it (mostly) right on keeping the writing focused earn a lot of points for me.
The open world I'm a little torn on. I thought the scale served the scenario well, and traversal wasn't too bad, but I didn't really develop any kind of "this is in the game and I (don't) enjoy it" feeling about it. It was kind of a means to an end for me and never really stood out in my mind the entire time. I may just be desensitized to them at this point and don't really care either way unless the developer executes on it in a way that really stands out from my usual expectations.
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