The best game i have ever played.Period.
The story takes about 20 hours to beat when you watch all the cutscenes and if you take your time. There are multiple difficulties so if you are good at action games or not it doesn't matter, for more diehard MGS fans(like me) we see a lot of improvement from past games, the ability to do more complex moves, like walking while crouched, rolling while in prone, flipping over in prone, and those are just a few examples.
The aiming has improved also, with over the shoulder and first person. The guns are very realistic and have appropriate recoil, magazine size, and look. All 69 guns look almost real.
A new feature that I think is amazing is almost every gun can be customized with an array of different accessories. Including flashlights, scopes, laser sights, suppressors, almost everything you need for your mission.
This game definitely deserves a 10 with its exceptional gameplay and graphics. In my opinion there is no game like it.