Not bad
Your effort is certainly noted, and the fact that this song is so long is nice.
To be honest I liked the intro a lot. I think it was very effective and sounded great. The main synth isn't quite to my liking...it's good...but it's not amazing. Your drum kicks are super meaty! They sound great and really have some depth to them, although I think could probably do with a bit less click.
The drums sounded great and worked perfect when they came in. It was also nice to hear you change up the melody a bit. The bass line came in and sounded very appropriate. I'm not sure that the bass synth is to my liking either. Could use a bit of tweaking IMO. Sounds a bit too plucky to me.
The build in the middle of the song was effective, but when all the instruments hit it seemed devoid of something, but only barely. It's a nice mix, but not extraordinary, and because of that I think you put it to an end really quickly and added some different quieter effects. I'm glad you did too because it sounded good and was much better than just dragging it on.
The end was mostly listen to that over trebled synth that I didn't like too much. It was ALMOST awesome, but I think needs an adjustment in the EQ. Nonetheless, keep up the good work and I hope this helps.