This is the Storm Combat Walker II. I built it in October 2012, as an upgrade to a smaller model called the Storm Combat Walker.
About this creation
So this model began in July 2012 with the Storm Combat Walker I on the Master Builder Academy website. Although I didn't see it as really great, the community apparently did, because it skyrocketed through the ratings, peaking at 5th most liked model. So, I decided to make a better version of the Walker, while keeping some of its most important features (the multiple legs, cannon, and cockpit, primarily.)
The design I had in mind included spider-like legs, using hinge plates, clip hinges, and click hinges (but not all of the legs had all three.) I built those, then moved on to create the chassis of the build, followed by the cockpit and the cannon.