Cool tune, love the laid back yet dark feel. Nicely different style.
Mix-wise, I think it's the drums, one chugging guitar part (I think?) and vocals right down the middle that are congesting things and fighting for space. The guitars at the outside are more transparent and clear, even the slightly dirty ones. If I were doing this, I'd spread the drum kit pieces a bit more and maybe EQ the snare so it's out of the vocal's way, and pan the middle guitar out a bit.