A start on my first sketch up model walker
some tech specs
30 feet high, stance width 14 narrow enough to fit in lanes and on truck trailers for deployment
retracting foot extensions allow for greater flotation on soft, ground reducing the ground pressure to only 6 psi, assuming a weight of 100 tons.
retracting auto turrets provide active point defence, against rpgs missiles etc
twin gas turbines provide the hydraulic pressure for locomotion
Armament is tentative at the moment