the snare can get a little buried in parts, you've got the "smack" spot on around 200hz and it's a sweet sound, but perhaps a bit more crack would help it cut, maybe around 2 khz, perhaps higher. It's hard to tell in the mix what frequencies are needed once it's all together. A wide boost from 1.5khz to about 5khz would be my first guess.
Some automation is always good when you're dealing with blast beats, the fast snare dominates the mix (not neccesarily bad ofc, this is black metal ofc) wheras the slow snare is sortof gone before you knew it had started. I'd bring up the snare a little when it's slower and lower it a tad during extended blasting.
I really like this mix, it's got a great raw energy and life to it and it fits the music perfectly
EDITED, see above
EDIT again: I think that with some more crack in the snare, the automation would probably only be neccesary to bring down the blasts a bit
Good points, I was thinking that myself too actually. Ironically enough, I did adjust the snare volume a little bit, but I actually increased it on the blast parts, which I now agree was too much.
Some more crack and a little better volume distribution between blast and non-blast, and it should be better.
Thanks a ton dude!