I got the game 2 weeks ago as an early birthday present and I'm hooked. My router is acting up so I can't play online at the moment but I'm having plenty of fun doing all the missions and sneaking around. The controls are so easy and the artwork is amazing. They used the same graphics from the Metal Gear Solid Digital Novel to do the movies in between gameplay. Its like watching a comic book. Seriously.
I think I have the most fun building my own army. Some of the bosses are difficult and I lost a few good men but I compensate with replacements. Sometimes I just recruit for the thrill of capturing people. I liked the AC!D games but they aren't as intense as the original MGS series. You can take your time planning a strategy in those games but in this one its all about fast action and quick decisions.
I rate this game a 9/10 in my book.