(BREAKING BAD SPOILERS) Was Walt upset Todd was killed?

He didn't seem to care. He was probably glad that Jesse did it and spared him the effort of doing it himself, given that he'd been shot.

Okay, it's been like 3 months since I watched the last episode of Breaking Bad but I can't think of one reason Walt would have been upset that Todd was killed, and in fact, I think Walt wanted the whole "gang" dead, so I would say no.

Walt was a changed man. He probably would of cared at the beginning of the series, but he has seen so many people die, so many people close to him, that it honestly doesn't effect him anymore. He turned from a loving caring father and husband to a ruthless drug dealer, basically the same as Tuko if you look at it (just not as......senile xD) I'm sure deep down inside he felt something, but then again, he also watched Todd kill a innocent kid. If that was not enough to die in Walt's eyes, then I don't know what is. So to sum up your question, in my opinion, no, he didn't feel a thing.

I doubt it or he could have stopped it if he had wanted to , he went there to kill them all in the first place

Hell no! Todd was a opie dead eyed piece of **** !