Wow, nice mix! To my inexpert ears, things sound great production wise. However, it sounds like it might be slightly over compressed, and the mid range seems a little weak compared to the high and low ranges. I don't listen to a lot of drum and base, so I don't know if that is a style that you are purposely going for. The vocals are very nice, but I am not usually a fan of vocals in video game remixes. I know its just personal preference, but would it be possible for you to release an instrumental only version when you complete the song? Thanks for making such an epic song.