That concept is the biz. Can't wait to see what you come up with. JadeEyePanda is right though. Maybe you need to retopo that armor before detailing. As it is it looks very lumpy and soft.
I agree with JadeEyePanda. You don't have to sculpt entire body in Zbrush. Please consider to use Maya/Max/Modo to make clean hard-surface modeling. Also, you can bring the hard-surface modeling from maya to Zbrush and sculpt it later.
@ JadeEyePanda and Dimfist. Thanks for the feedback guys, I went in and retopoed everything and got a much cleaner result. Really glad you caught that. @foredea Yeah Maya/Max and Modo are way easier to do hard surface in, but I really want to get the practice in zbrush. Here is the result, thanks again.