You must know about Infinity the game ( [link] ). It's a sci.fi miniatures game which has armoured soldiers similar to yours. I think you'll enjoy this universe. Your work is spectacular and refeelcts greatly both, war and thechnology.
Great speedy! The main guy is very well done and with plenty of attitude -- I also like the composition with his/her companion scattered around in the background. I would probably get rid of the ship on the bg or paint it differently, I think it brings few to the overall image and its perspective somehow risks to break the painting. Keep the very good work!