I really enjoyed this and I liked the "rough n ready" approach
There are some obvious mix/timing issues that have been covered so on to the song...
I think the song could be a little more "focussed" - all the bits are there but it is all "spread out" a bit too much and there is almost too much going on!
You could even split this up into 2 or 3 different songs with all the different riffs, sections etc.
For me there are too many "gaps" - e.g. is it a break for a riff? is it a solo? - there is so much going on I think the track loses a little focus in places
A good example is the intro - I thought the vocal could have kicked in at around 12 seconds after the first riff (which I loved) and then save the second riff as something new later in the track
As it stands you have a 45 second intro
- which is quite a bold step, especially if you plan to use the track as any form of demo
I think you have all the right bits and pieces and I think you could have a really great, focussed, track if you got ruthless with the editing