I'm really happy that they kept the show clever. I'm glad it wasn't as simple as him just going to go kill the Nazis while holding a gun. I loved the ending, because it tied up everything perfectly. Walt came to accept he's evil, admits he enjoyed it. And ends up dying in the lab.
Perfect ending. It wrapped up almost everything nicely. I was kind of expecting a little more explosions, but he played it smart and got rid of the worst people without killing any innocent people, so I liked it better.
Great ending, Jesse is free and no one ever suspects it was him cooking the blue meth. Only Heisenberg who was found dead in the lab and will be forever linked and to blame for the entire meth operation just as Walt would want it.