Pretty cool, Dex. I see the influence, mainly in the bulky metal shapes.
By default my eyes want to see more of the robot mech thing and don't understand why so little is being shown. For example, think how you'd feel about ilkke's latest pixel, of the huge robot clockwork thing on the tiny planet, if it was cropped down so we could only see half or even just a third of and not the whole thing. It wouldn't feel right.
There's an astronaught dude in bottom let looking very calm, yet in the bg, his people are being violently annihilated. I'm not sure what this peice is trying to say. He should be freaking out, right? Is he flipping us off or is that detail in his suit? Hehe, that must sound dumb, but if it was detail in his suit it's oddly offset to his right, not centered. Also, he's the focal point in my opinion, I think due to him being very light, contrasting everything else. Yet, he's not "the action", but rather just a supporting element. I think it's hurtin' yer composition. Are you trying to put the focus on him.
Surface texture could emulate perspective better by the "chunks" getting smaller faster as the viewpoint diminishes. Right now, they just kinda stop at a certain point. I know, I know, that's the tedious stuff, but it could help a lot. Won't even comment on the distant planet on the horizon, it's too WIP.
Yer on the path to a cool peice. Hope my observations are helpful.