Loving this melody! You've chosen some interesting sounds, but you've centered the rest of the instruments around this style and it all fits. I also like your song's structure, the intro leads up to the main thing nicely. You've also captured the ominous vibe extremely well. I only needed to hear 5 seconds before I could tell exactly what you were trying to make.
One thing that's immediately noticeable is that the snare's volume seems to fluctuate. At times it gets lost in the mix, and other times it sticks out sharply. I think one thing you should do is figure out what's causing that. Another thing is the kick drum. I can't hear it very well. Especially for something like this, I'd suggest both changing the kick drum to something a bit punchier, and sidechaining the kick to the rest of the instruments. This will give the song that pumping feel and bring out the kick.
Another thing would be compression. The waveform has a lot of tiny sharp spikes; you could put a compressor on the master and compress those spikes. That way, it'll allow you to increase the volume a bit more! There's also a short loud click sound at the very end of the track. You might want to fix that.
Great job!