Loki would be pleased.

Nice work here.
First thing I noticed though was that there's some noticeable clipping occurring due to the overall volume of each instrument combined. It doesn't seem to be any one instrument in particular, but it's definitely all at the bass level. Or so my ears tell me. Just try to keep that volume level in check with an envelope. And equalizer over your whole project could also help you to keep your full volume level while avoiding that unnecessary clipping as well. Just a thought.
Other than that, I like what you did here. It's got almost enough variety here to keep it 100% listenable through the three and a half minutes. Your instruments seem to compliment one another pretty damn well through the most of track and your transitions are decent too.
But ugh, just watch that volume here. Really I think that's the only thing holding you back from a much higher score.
Regardless, very good work.