There were quite a few instances in this piece that almost completely subverted my expectations.
At first I wasn't entirely sure how this percussion was going to mesh with the rest of the mix, but it was actually one of the biggest components that I enjoyed. I also liked how it didn't just build and build, but some parts were taken away and reintroduced at certain sections. I think I personally might've delayed the entrance of those elements just a little bit longer at the beginning so that it comes in with some of the other instruments you used, but that's nit-picky.
I was also pleasantly surprised by some of the harmony you used - it was different and gave the piece a brief change in tone, but it was also very tasteful and kept me intrigued throughout its entirety.
Thanks for sharing such a solid piece of music - keep up the good work :)