This game is helped along if the user is a bit (or a LOT) OCD. I personally don't like the 'online' bits, and fortunately they are not a necessity for the game. Some of the things I found annoying are the camera positions, only being third person and fixed, mean that you are guessing a lot when traversing mountainous terrain Looking up at Sam's butt is NOT a good view - for finding your next handhold.
As to Hideo's style, this game (like ALL RPGs, to a greater or lesser extent) requires the user to put their sanity in a nice, safe place for the duration and just go with it Try not to read too much into the alternate universe that Kojima Studios has created, just make it your belief system for those moments.
Beautiful scenery, (or should I say 'beautifully done'?) nice music (which is good - the options do not include 'no music') much attention to detail....
I was worried about 're-playability'. And, indeed it is not going to be as good in that niche as most of, say, Bethesda's games. But I am on my third play through. Indeed it took me two play throughs just to understand the game mechanics fully
Would I recommend this game? Depends on the kind of person you are. If you are just out to 'beat' the game, then no. If you are a person that can appreciate the details, and the attention to same, a person that can suspend their belief and adopt another belief system, then yes. It also helps if you are just a tad OCD....