Great work! I like the dark, imposing feeling.
Constructive critique: I think the chord pattern gets a little repetitive. I used to kind of run into this problem with my own stuff more until I started just improvising more music with piano and other instruments. A microphone and singing is a good way to do some of this as well. Composing straight up in midi is kind of hard. It's like you lose the raw inspiration because it goes too slowly, whereas if you're playing it, you can record it (badly) and then put it back together from memory and what you played.
It's like being in that moment is where you interface with what the music is *actually* saying, like the spontaneity of the music becomes present in the playing.