First, I would like to point out that I have no 3d skills at all. This is way better than anything I can make. Looking at this characters design, it's definitely a solid concept. The main thing I like when looking at armor, is that all the pieces have a similar design, or follow some sort of pattern. I suppose having matching pieces is the best way to put it. Another thing to keep in mind, is the purpose it's being designed for, like recon armor will have light, fewer components with a lower profile, and heavy assault would be more bulky/powered/shielded/armored. Looking at this, I like it. The things that bug me: The chest plate looks a lot more simple, compared to the arms and shoulders. Try adding more in the way of gear/plating, or make it more detailed. The thighs just don't seem to go with the rest of it. At least from the pic, the rest of the armor looks more contoured, and the thighs look...spiky? Definitely want to see more of this. Nice work.