The only thing that I found annoying is the position of all three characters. They got their legs in the same position, maybe the first should have this position and the two others, probably "following him" would still be walking. It would look more natural.
Even tho I'm not a great artist at all, I think the job done here is really great!
Love the details you put in trees, destroyed city...
How much time did you spend on this!?