I would say that the suit could use neurological imput similar to the Endlave, but still having the pilot inside akin to the nightmare, but both are too advanced for this time setting.

If anything, why not try making it similar to master Chiefs armour? Bullet resistant, can take quite a few shots, but has weak spot at all joints. As well, it is severely weak to melee, making it a mid ranged military grade battle suit. And if we are on a naming subject, I would personally call it the "Rhino Frame" or something similar ^_^