Yeah, I'm playing it these days. It's brilliant, like it.
I have played the first Nier too and I loved it few years ago but this one is quite a lot different than the first one. The PC port is good but some people have fps and crash issues (not for me so far). The setting of the game is more mecha/robotic compared to the first one. Personally I'm not a big fan but I don't mind it. The gameplay is really fun and never gets boring, plus in some places you have friends helping you (you can play with them too, there are 3 playable characters) and you can give them instructions about how their playstyle will be. The world/environment of the game is gorgeous and the soundtrack is one of the best just like in the first one. My favourite game of the year so far.
I love the mini-missions that you control your robot as well, reminds me a lot of these old-school games I used to play.