Nice! Never heard the original song but I love Troisnyx. Why not not link to the original track in your description? I love the elements here. I just wish the mix was a little cleaner.
I reiterate a lot of what RealFaction felt. The mix sounds pretty high end. Maybe up the mids on the distortion of that guitar to help balance out those highs? I'd lower the levels on those crash cymbals a little. Crash cymbals take up a ton of space but don't need to be very loud to effect the quality of the entire track. I used to wham on my crash cymbals so much in high school. I've learned to be a littler more conservative with them as my hearing has dissipated over the years. It's a piece of percussion that mixed into something, can be a whisper but still have a ton of presence.
You can improve drum rhythms if you add some variety to the velocity of drum hits. I used to automate the levels on my hi hats to emulate the crescendos and decrescendos of a live drummer. I'd focus on putting that kind of variety into those bass kicks. For those double pedal rhythms I'd use a slightly higher velocity for the first kick hit. It's a small detail but we notice that kind of thing.
Love this track! Could you give me a recommendation for one of your original tracks? I love metal :)