Nietzsche’s Challenge
A challenge to what?
 

To say why he is wrong! To show that there is more to “ethics” than he thinks. Defend the idea of duty! Or the requirement about the happiness of others! Or that being a noble person is in the end more like what Plato said – being virtuous is more than just being “a will to power”! Or if none of these seem right, and you think Nietzsche was onto something, then pursue that path. Whatever you do, don’t have NO path. 

So get to it: Lodge an objection, explain Nietzsche’s mistake, or defend him in this discussion board.