Metal Gear Solid V: Ground Zeroes is a short game. After you have a good feel for what you're doing, you can run it over and over, experimenting all the way. Eventually, you'll know it like the back of your hand (assuming you know the back of your hand quite well).
That's when you can get creative and silly. Like, beating the whole game from a prone position and rolling everywhere. It'll probably be easy for me; I used to be the (self-appointed) somersaulting champion of the world.
But, Snake barrel rolls more than somersaults, so that's a whole new challenge I'm unfamiliar with. Also, he shoots amidst all his tumbling. I know when I'm bested, so that's a biathlon trophy that I'll gladly forfeit.