I would say there was minimal redemption for Walt. A little but he was just too far gone for any real redemption and he knew it. The tune for the ending scene was absolutely perfect.
http://www.youtube.com/watch?v=0pwc0klMRSQ
I feel like, in the car, he seemed to pray that God give him the chance to get home and he would “take care of the rest” and then the car key fell out of the visor, etc. So, maybe he was then a “good guy” ish? He was trying to right his wrongs, kill the really really bad guys?
It left me with theimpression that meth ,hiscreation, was the only thing he really loved at the end.