Finished it with total play time of 4:19....
seriously?
This is the first game I've ever played where I hit the end of the game and immediately restarted on a harder difficulty, then did it again. I've even started going for the no-damage boss fight trophies.
MGR is sort of like a gateway drug to understanding character action games on a deep level. I started on normal, just kind of button-mashing my way through. I didn't even learn how to use parry until halfway through the game, and I really didn't understand it until my next playthrough. The thing is, I had such a great time with the Metal Gear story and attitude, and the music, that I just wanted to keep playing, so I went straight into a harder difficulty.
Then, at some point, something amazing happened. Every time I played the game, I actually felt
better at it. I was able to recognize the signs of enemy attacks, I was able to parry every attack, I was able to remember combo strings, and understand what situations the sub-weapons were for. Sections that I could barely get through on one day, I was able to breeze through the next. Now I understand that THAT feeling, the feeling of mastery, is the appeal of Platinum games, and I'm really happy this game was flamboyantly fun enough for me to get to that point.
Sure, a single playthrough is 5-6 hours, but I've got 15 hrs on my save and I'm still going. I'm sure a lot of the people in this thread have way more. You just gotta try to play the game the way it was designed to be played, and you'll find a whole new game.