I'm not a fan of the voices; I just wanted to hear the music. :D Love the buildup near the start with the repetition of notes, but I feel like the gradual increase in volume could have happened a bit sooner. Some parts felt like they dragged on, and it seems like much of the length of this piece was due to repetition of notes that weren't quite clear cut.
I love the increase in speed, and for the most part the subtle bits of variety added to introduce and play around with old ideas worked well. It was interesting to see notes fill the space where the percussion normally was.
Was this piece for a boss battle at some point? I got no boss battle vibes from this track at all. Well, maybe an endless runner or platforming challenge-based boss battle I could picture this theme playing in.
Overall, it could have also benefited from a little more percussion, or perhaps heavier percussion. And the shouting voice accompaniment started to get irritating after the first ten seconds. I think it was because while the volume of the overall piece decreased, the voice remained constant, so it came off as loud and jarring. Think maybe 4:12 onwards? Somewhere around there.