GasparZizou
Super Freak
I'm 53 hours in and I'm still not finished. You'll definitely want to spend time with the side-ops to get better soldiers, too. And mentioning Mother Base, nah I won't spoil it... let's just say that there are some instances in the game that can break your progress, and you'll have to find yourself backtracking all over again.
Thanks. I'm not worried about Side-ops though, I've done like 20 of those and I usually beat them as soon as they pop up, and my army is pretty decent, got like 5 unites out on missions and I always go out of my way when I see some nice stats on a soldier... I lick my lips while watching them through my binoculars and go after them.