Interesting work on environment noises and effects.
We kind of lose our marks, but in the same time, that stays really in rythm, thanks to the battery.
I give you many points for the originality of the song and the diversity of all the sounds. Finally that makes a very coherent and homogenous song (despite the variety of voices).
Maybe you could have worked a lil' more on the "melody", and have added some more "normal" instruments, like a bass, or something, cause in a way, it's a little bit empty by moments.
Overall, that's a good and interesting work in my opinion.