Repetetive and harsh
I rated you a six- and those stars are because I can tell some thought went into making this 4-minute track. However, I'd say that you should focus more on melody next time- this song is lacking an appreciable tune!
If you have trouble knocking down notes to put into your song, a good place to start is a chord progression. Try listening to a few songs and seeing which ones appeal to you, or get your creative juices flowing. This will give your song a human touch, and a catchy tune for people to hum along to, and make the song much more enjoyable.
UNLESS, of course, your entire aim was to get an industrial, ambient, dirty feel, in which caseH I guess you succeeded.