I gathered Adele was also dead
Adele died on the mountain side and came back in her wedding dress, so that her and Simon were as they were the day Simon died.
Lucy and Victor are half living / half dead, like baby Nathan. Victor said to Lucy that he (Nathan) is like me. These half dead / half alive beings live for ever, in effect, walking the Earth.
I thought they tied up everything well. I was expecting a much worse ending, after season 1's ending.