I think this is pretty nice! I like the armor design and the texture/shader that you created for it. I can see you put a good amount of thought into the design (through cables, pistons, ect) and it shows as being something that could be functional, therefore believable.
The thing that bugs me is that the silhouette’s “weight” is a bit unbalanced. The arms and legs are massive but everything else looks quite small in comparison. I think that if you create a torso, neck and hips armor to balance the weight of the limbs, everything will fall together perfectly.
Just my 2 cents This is great work anyway.