I've just listened to these new tracks, and I've got to say they really do sound good, perfect for a game like this I think.
Just out of curiosity, if you don't mind my asking, what tools/software/DAW did you use to make these? Also, I don't know if this would interest you or not, but I've starting coding my own VST plug-ins in C++, and although none of them are up to a 1.0 release yet, I'm looking for dev testers and feedback for a couple of them - If this would interest you please let me know, if not don't worry about it.