Shit this is good. Like... Really good.
The little cutout at 0:17 just before the next measure is the kind of minor touch that turns a song from "good" to "great".
But the reason I'm writing anything is because the melody you made. It's absolutely fantastic. I'm a deathmetal diehard but I caught myself smiling and shaking my head in minor disbelief because WOW it was catchy. Better yet, you have a perfect countermelody reprisal that's just... Absolutely fantastic.
Would seriously highly recommend playing more with your knobs. I know what that sounds like, but I mean specifically ADSR (Attack, Decay, Sustain, Release). As a line goes on, slowly increasing release or decay can REALLY add to a build effect. Also maybe try playing with portmentau (the glide between the notes) and it's timing as things go on. Automation is your BFF with this kind of music and could give it just that much more character.
ps3udo23 
