So I am around 5 hours in on the first Metal Gear Solid game, and from what I've heard about halfway through. So far I am really into it, and the game is pretty different from what I expected. First off the boss battles are amazing, psycho mantis, ninja, and vulcan, have all been very fun and challenging, I particularly enjoyed the ninja boss fight. The dynamic to every boss battle is interesting as well, each time I go in blind, not know what to use, and I haven't beat one in the first go around yet. Each one has taken me around 5 to 7 tries, getting slightly frustrated after each loss only makes me want to go at it a different way, and use a different strategy. The story so far has been very interesting, the isolated day in the life way of storytelling is extremely effective to me. The stealth gameplay was something I was a bit worried about, seeing as how I typically don't like these types of games, but here it feels very tactile, and to say the least I am getting the hang of it. Another thing that is great is having a reason to use all the gadgets they give you, and signifies really good game design.  
 
Stay tuned I will hopefully finish the game soon!