Awesome drum beat! There isn't much of a melody (which ís more common for boss fight music), but the song definitely FEELS good. The error-y effects at 0:32 fit AA well, and the buildup from 0:00 to 0:06 is very well done. I'd say that your sick beat is definitely the most compelling aspect of the song, and some cool variation with melody and all could knock this song straight into the atmosphere! Nicely done! :D