Well! For starters, I'd like to say that this is one of my favourite mixes on this site. Even if it's Techno, and I hate techno. I owned this game in actuality, therefore, I remember the songs clearly, and this does a great thing with them.
The transitions work wonderfuly well, and everything links correct. And, oh, excuse me, but that thing is NOT a fugue. It's not even in counterpoint, much less is it anything like a fugue at all. Hell, it doesn't even look like one unless you don't know what a fugue is-sounds like.
Besides this, I believe that this remix covers more than one theme, but it works really really well in going places, enough not to bore me superquick (which most techno does). Good work, thumbs up!