Alright, let's take it from the top.
The intro was, to put it simply, boring. You had a drum line and a single, repeating synth melody, and it took 20 seconds to get out of that.
The rest of your song was, easily, much, much better. The melodies you used were nice, although somewhat repetitive. I get that 'underground' vibe that it gives off, which means it has a nice atmosphere. There was one part at 1:19 where there was a pause and I completely lost the beat of the song. You should probably try and avoid that, because most people who get into the feel of a song feel a bit strange when there's a half-second skip that messes up the tempo.
The bassline is the gem of the song. I think what you could've done was to introduce a simple bassline in the beginning and slowly make it more and more complex through the song, adding different higher-pitched melodies to it as it went along. At least, that's probably how I would've approached it. Still, your way was great as well. As Lockyn put it, it was "spacey". I think that's a great term for this piece.
It's a good piece that explores different effects and patterns. But how the hell does it have 155 downloads and only 125 plays?!