Probably my 2nd favorite Metal Gear after Snake Eater
how much you like it though depends from person to person because it's format is pretty different from the other games. It's more mission based stages and extra missions on the side instead of a bunch of connected areas. There's also the whole building an army side of it by capturing soldiers and rescuing hostages. However Fulton Recovery makes it fun to do because you can just balloon guys right out the area and you don't have to drag them to a truck like you had to do in Portable Ops.
There's 32 Main-Ops which is the main story and then 128 Extra Ops which are all the various side quest type missions, harder versions of boss fights and monster hunter missions
then obviously the HD Edition makes this all better because you can use PSN to play online and no ad-hoc like in the original Peace Walker. Most missions can be done with 2 players and boss fights with 4 players. There's also a 6 player deathmatch mode too
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