Very good post apoc. Brilliant, what I really love about this is how unique everything is. Your designs for the gun, the feet, everything, never seen one quite like it, great work and extra points for the background build.
A very well created mech; looks steampunkish and complicated like any exposed mech should be. Using that Bionicle Zamor launcher as a "cockpit" is ingenious. I think the legs are a bit ugly though, even though I really like the suspension aspect. Great job!