Interesting..not my usual listening, but I've listened to far worse over the years, trust me.
Just a few little point you might want to consider..the intro might work better if you run the vocals over the strings and let them fade up gradually under the voice, so there's more "relation" between the two track features.
You could try something similar with the second part of the track..the pulsing noise section..but, that said, it seems to work fine as it is.
One thing I found myself imagining as I listened to this was a 4x4 dance beat playing along with it..to kind of to bring out the "madness of the dark" in the piece..but again, it still works fine as it is..
As for genre..yeah, maybe Dark Ambient or a sub-genre of ambient like that..not really sure exactly, but I think going with Dark Ambient would be near enough for most people to get it.
Cool work..clear sound..nice one.