Loved it. Mix down could probably be a little more fine tuned but I love the elements all coming together to make some really grimy filth <3 <3
Edit: since you're asking about mix I'll toss out a few ideas. Fair warning, everything is awesome I'm just nit picking things. I'm at max volume listening to this but I like having the option of turning the volume down. Theres more room in the mix to push a few instruments harder. People worry about over compression but you might listen to your track on another set of speakers and realize this sounds different. Bass is great but given the genre you might be able to push it a little more. Snare drum falls a little flat sometimes. Maybe experiment with another snare layer more in the mid range? A clap or 808? I'm really splitting hairs here but I do feel like certain tones are missing. Maybe some more aux percussion? This track would love a vibraslap or a waterphone.
I can't tell how much panning is going on but I think you can really push left and right further. Panning creates the illusion that sounds are louder than they actually are. By getting braver with mid to high range panning you can then turn those sounds down a little and make more room in the field for other sounds. Things to try panning with include pads, aux perc, and various sfx. Favoring a left or right side can also lead to issues but you can always find ways to balance the mix. Just takes some playing with :)
I've been advised to keep bass frequencies mono or in the middle. That includes the kick drum. I like to put a small bias on the ghost snare but the bulk of the snare layers stick to the middle. Then use them to sidechain sub bass frequencies.
Again, you did an awesome job. I only came back around because you asked. I'm always willing to clarify stuff :)