Great lighting, exposure and control of depth of field!!! I like how the fluids(blood, sweat, whatever) were well captured. I like the control of shades and high lights.
May be some slower exposure shots to capture some movements next time?
I'll be honest- I'll shoot at whatever setting I need to get the shot. If that happens to be ISO 6400, so be it. I consider shooting anything at short of ISO 3200 a luxury.