Nintendo has ruled out the possibility of implementing Achievement-style rewards in its future gaming systems or games in an interview with Kotaku.
Nintendo's Bill Trinen, speaking to the website this week, stated that "when they create their games, [Nintendo's designers] don't tell you how to play their game in order to achieve some kind of mythical reward..the way the games are designed is they're designed for you to explore the game yourself and have this sense of discovery."
Referencing the work of Shigeru Miyamoto's own EAD group, he explained the actions you performed in a game that yielded a surprise was reward enough. "In my mind, that really encourages the sense of exploration rather than the sense of 'If I do that, I'm going to get some sort of artificial point or score that's going to make me feel better that I got this.' And that, to me, is I think more compelling."