It's a damn good adaptation. I got used to the CGI pretty quickly. Sometimes something would look especially off for a second and pull me out of it, but for the most part I think they made it work. The 2D scenes mixed in helped. Soundtrack's incredible. Background art is phenomenal. And some of the ways they re-framed scenes to avoid having to outright censor the gore actually worked better, in my opinion - in particular, I think the reveal of Ebisu's little face accident in the first episode had more impact than directly showing it happen in the manga did. Some stuff I wish was different, but all in all, I have 90% good things to say about it.