that looks really awesome man! Fantastic job :). My only crit would be that it's maybe a bit inconsistent with where you painted shadows and where you didn't (like the floating armor bits at his belt vs the ones at his shoulders).
6000 triangles and one 1024x1024 diffuse map and your character looks that good?! This would run so well in an engine, and totally NOT be resource hog. You should take this further by at least baking out different texture maps. I don't know if it's just me being a character artist but this looks so awesome!