As you've said your going for a minimalist style, and that you have achieved, however i don't feel the melody or instrumentation hold up enough to have such a long and repetitive song. I would recommend having melodies that intertwine or that overlap each other in such a way that when looped long cycles appear. I enjoyed the sound affects and they helped add some interest but i still think more needs to be done to keep the listeners attention. I like the title though, and the part that enters at 1:12 is cool.
Sure it was not up to the standard yet, but it was interesting that it would at the very least turned out that way. Thanks for your opinion!