I have carried on, finished the second leg, made an icon mechanicus sort of sign where the At-at head should've been and attached the legs to the body. I have also started trying to make the guns. I am planning to use two small fan handles as the barrels, then for the vulcan mega-bolter attach the rocket pods from a valkyrie and for the plasma blastgun I am planning to extend the power reservoir on an leman russ exterminator cannon. If you have any suggestions please comment. Meanwhile here are some pics of my progress so far.