Very nice although the arp lead isnt my thing, if i were to say anything id keep it but focus on the darkness in the background and drown the arp a little. Sub bass on the second half in particular (the more playfull and complex bass) is lacking aswell but this and the other track you have on here are both really good.
I reckon the levels on the bass change a little throughout actually? I would try smashing it with a limiter and eq again then see if you can normalize them a bit and figure out whats drowning them out. My mastering knowledge is limited though so pinch of salt there.
Nice interest in your tracks aswell and im liking the oldschool sound.