I think the fatality penalties are morality based, rather than stealthy. Killing everyone can certainly be stealthier, but MGS has always been a series that examines the motivations and backstories of their villains, rather than demonizing them and letting our natural instincts of revenge and justice take over.
Sure, a lot of the main villains end up being horrible people. But the grunts and henchmen are almost always portrayed as just regular dudes doing their job. Do they really deserve a knife to the throat or a bullet to the brain for being raised in the wrong conditions, or being in the wrong place at the wrong time?
The MGS series is one that leans heavily on how subjective morality can really be. We see characters defect to different sides of conflicts at the drop of a hat. Does it really feel justified to kill US marines in Ground Zeroes, when just a game and a half ago, you were fighting to protect them? Have they really done anything wrong? Listening to their in-game conversations gives off the impression that a lot of them are unaware of the shady shit going down, or how trapped they feel being stationed there. Does somebody deserve to die for simply wanting to serve their country, and getting stationed at a bad place? I mean, for Christ's sake, the more recent games even give you the option to abduct and recruit them for your own group of mercenaries.
I think one of the main ideas Kojima tries to get across is how absurd it is to hate an entire group of people for disagreeing with your group of people. He seems like a very anti-war and anti-violence kind of person, if his games are anything to go off of. It makes a lot of sense to me that he would penalize a player for indiscriminately murdering everyone on the screen.
Or maybe I'm overanalyzing, and it's just to encourage players to play stealthily instead of running and gunning it.
>>703>but what about Kojima rescue, do they want me to just use the stun pistol?Yes, they do. It's difficult, but not impossible.