Mixing Advice
I'd like to say overall, nice job!
I understand you did this in the studio? There are a few ways you could improve your sound, which sounds atm a bit like metal from the 80's, mixing wise. The guitars are very very thin, something you might hear in early blackmetal, but it is not pleasent to listen to. Maybe a bit more low end on the guitars, just something to fix the fizzyness.
Also, the vocals have a few problems, a few points where the singer is a bit too close to the mic and you hear the phss sound because of it. Also, the vocals should be EQ'd a bit to fit the mix a little bit better, they seem a bit out-of-place.
I can tell by the amount of reverb on the drums that you were going for something of that sound, and you did a good job! but theres always room to improve