Cool story, check, great gameplay, check, crazy characters, check, what you get is a MGS.
The graphics are great, the interaction with the environment in First person view is an excellent addition and the new moves are cool.
It starts with an older, more mature snake, infiltrating an oil tanker, but a Russian army attacks it and guess who's behind it: OCELOT!
Now with Liquid's arm, her steals the new Metal Gear and "kills" snake.
At this point, the only character playable is Raiden, a young man with no past, the craziest stuff happens in the big shell and snake returns as Pliskin, Solidus the 3rd Snake appears and his army of freaks, a MGS1-like simulation.
The game it's so acclamed because of the secrets it keeps, but kojima says that he will reveal the all on MGS 4, I'm looking forward to it.