Articulating Powered Armor
Well, I need to see if a passive external skeleton will work before I start casting aluminum. I’m not sure how I should mock this up, but the joints look like a good place to start.

Of the 14 main joints, 5 are straight hinges. Two have loose hinges or floating axes of articulation. Two utilize ball races or interlocking flanges to put the wearer through the joint, in conjunction with sliding hinges. Two are freely rotational with loads of axial play. The two hip joints are either ball joints or universal joints, and the torso rests more or less loosely atop the pelvic armor.