Adventurous....
I'll get the vocal part out of the way: you probably knew when you recorded them that not everyone would like it, so I won't dwell on this. Still, I really didn't care for the vocals...I know it's a genre style, but they really didn't add to the song. I mean, the section at around 3:30 kinda highlights this; the music during that part is really good, but the vocals take away from it.
Anyways, on to the important stuff. The guitar work is very well written, and the dissonances in here are neat and used well. The drums are creative, and they really add to the feel. Honestly, the only thing here I would change musically is that some of the hihat hits (the higher pitched ones) seemed way too high up in the mix compared to the rest of the drums...it seemed almost like they were mixed as if it were a dance song, and it's clearly not a dance song.
Also, about the ending: it was definitely inspired, the mood switch was really cool. Like the rest of the music, it was very creative. The ending was a definite highlight, if only because of the mood the various samples combined with the change from metal to ambiance created.
Overall, there are a few questionable things in here, but you are really quite a bit above most of the generic techno stuff on here that might get reviewed better, so keep on being creative.