You've got some very cool sounds here, and the dynamics are good across the song as a whole. I would consider it an improvement if, in the final third of the song you varied the recurring portion (-,._'.,_-'_'-,._) between the heavy guitar riffs more - the riffs themselves are a good break, but there isn't enough going on melodically in between to make it seem like a cohesive part of the rest of the song. It feels more like a loop during that part in particular- but I feel like there is a lot of opportunity to do something really interesting with those parts to take the song to somewhere new!
Thanks for posting the song! A pleasure to listen to.