I really like the ideas here, especially that metallic wub that happens from time to time, but there's still a few problems with this. It's kind of structureless, and that feeling isn't great. Don't get me wrong, it's great to have variation and variety, but there's just a bit too much here in terms of song sections (not necessarily ideas/sounds/melodies). Maybe structure it so that there's two big sections, each of which gradually build and are noticeably different? I dunno. But just make sure that the listener isn't too lost. :)