Animation quality is in my opinion better then season one and the show knows when to go all out.
Soundtrack is always on point and even better utilized then in season one.
The story does stay pretty much on course with a few deviations that were already setup in part one. Fans of the game might enjoy that there's plenty of side story/novella content being adapted that wasn't in the game (or just on terminals) and there are a few easter eggs to the Nier Reincarnation gacha game as well.
The people that make this show are clearly fans of the work that they are adapting and are paying homage to many key moments of the game within the show and I absolutely appreciate their dedication to doing it justice. Especially the title card and bunker scene at the beginning of the season.
Now that the season is over I can say that I am really glad that we got this adaptation, it changed enough to be worth watching even for people that have played the game and it also fleshes out some characters that, at least for me, didn't really grow on me in my playthrough. Not everything shown in the anime will stick the landing for anime only watchers because there is a good amount of fan service (not that kind but there is also plenty of that) but it's a great watch regardless and may even bring more people into the franchise as a whole.
For me it's a 9/10.
