In my first try several months ago, I did not even go through the first part of the game, I could not reach the checkpoint to save the game.
Given the high expectation about the game, I decided to give a try, reduce the difficulty to easy in order to enjoy the story even though the gameplay is very good. Well, while the story progresses I got more and more engaged to take the most of it.
The characters are great in its way, 2B 9S and A2 are really great in their own way. They develop during the game.
Please make sure to get the most of the game, when you reach the end of the story in your first game through with 2B, you actually have not reached even 25% of the game. You have to continue playing this time with 9S where hacking is the most relevant feature, several new side quests appears where they can be only done by 9S given the hacking capabilities. When you finish the second game through, you have not even reached 50%, you really need to go through a third game play to fully get the good progress and get into the story.
I have not gotten the platinum trophy yet even with 9% of the players have gotten it. I think that the most complex part to get that trophy is go through Emil quests where involves getting all the swords and fully maxing out them, in addition of a "missable" trophy with a specific fights.
The game has several endings from A to Z with the Y being the most difficult to get.
Please give a try to this game, you will not regret any second on it.