A rating of 4 stars out of 5 is pretty fair in this circumstance. Throughout the production of the game many people from the likes of Official PlayStation magazine stated their concerns in the improvements that could and probably should have been made. From what I know, Square Enix ignored a lot of feedback and just went with what they had to make sure that another game fell to the name of "delayed title".
I have to say that the game itself is molded around a great gaming series, and does hold up well - but they have failed to make a true impact in the aftermath of games such as Bethesda's, "Dishonored" - which is a great game.
Still a very enjoyable game so far - and perhaps their will be more surprises the more that I traverse my way through the game.
It's worth playing, but you won't be truly wowed!
A good effort!