A bit repetitive
It sounds very much like a boss battle of some sort, but when it just winds over and over through the same sections over and over, it just doesn't make it as a boss battle theme. It needs a tune to come in!
I'm not suggesting you copy it, but maybe if you listen to some of the classic Final Fantasy Battle/Boss themes, you'll see what I mean.
They come in, similar to yours (but a little bit faster, with those tense-building background parts), and then they'll come in with a tune, that just fits in with the repetitive structure for a little bit, and then the whole structure will change every once in a while, and add a whole new tune.
You did a good job, with what you have so far, and i'm going to download it for learning purposes. (I still don't have down fast, battle type music, and i'd like to get better with them). But I really want to see a nice tune come in with a newer version!! :D 8/10 and 4/5.
Check out my stuff! http://www.newgrounds.com/audio/view.php?id=1745889&sub=676