It's hard to judge stuff like this, because I know it's customerary to brickwall limit and drive the piss out of them, but to me, it sometimes drives the life out of a piece. This is such a "wall of sound" that it's really hard to talk about nuances of production, there really aren't any; it's just all right in your face. And that may in fact be entirely appropriate for the genre. I'm no expert at hardcore. It did sound a bit rich in the very low mids, a bit thin from 1-3K, and the drummer needs to tighten up control on the double pedaling some, the 2nd foot rushes quite a bit on all the speed patterns. The guitarist is on the money.
For what I've heard of the genre, it's certainly a fine example in comparison to some of the crap I've heard. It sounds like you put a lot of effort into it, it's not just chucked together pellmell.