It's been almost 5 years, and I still love playing this game.
Sound: 5/5 - Music is perfectly composed by Harry Gregson - WIlliams. Each track matches the environment of various levels perfectly. And the music in the final level was both somewhat scary and simply breath taking, mixed together in the best possible way.
Gameplay: 5/5 - Yes, I said it. Those who said that Raiden was a poor choice of character need to grow up. Yes, he's somewhat girly, but he grows out of it after a while. The gameplay also really works well with stealth, since you have to hide bodies after you kill them, or when fighting a massive horde of soldiers. Stealth is simply crucial if you want to stay alive in this game. And believe me, that's a VERY good thing. Storyline: 5/5 - This is FAR better then the first Metal Gear game. Simply amazing storyline, one which you'll love to both follow, and how to see in the next MGS games.
Overall: 9.9/10 A simple classic which you must own.