I won't give anything away, but the ending reaffirmed to me why, of every character in that genre that I know of, Batman is the one that I have revered above all others.
Though he fights, he does not kill; his methods are violent, but nonlethal.
He is reviled, hated, mocked as insane, feared, hunted, and persecuted. In Gotham, he plays a critical role, but does so transparently, alone and in the shadows, and so he is taken for granted by those others who crave the spotlight themselves.
He shoulders it all; the onslaughts of both the monsters he fights, and the abuse of those he protects, and endures.
When morning comes, he fades away, after having spent his own time in darkness; doing what is necessary to ensure that others can continue to enjoy the sunlight.
"Greater love hath no man than this, that he lay down his life for his friends."