Crap.

1 for effort. -9 for failure

Has potential, but needs work.

Whenever I hear this song, I keep craving for more, but it isn't giving it to me. I really like the style you've imbued in it, but it isn't enough. If I were you I would try to get rid of some of the choppiness and use this as the intro for some song. This is a great start, it just needs a little more.

No thanks.

No thanks mate, this one wasn't for me. It would've been better if there was vocals, and teh guitar was just in random places, with random notes. Did you even have a tab? To be honest, you can't really have a good audio just based around a guitar riff. Add some drums, add some vocals, and some bass, then it might just pass through.

Has potential

If you keep working on this one, I can see it as a popular song. The rhythm is too loud for the lead. Start with that, and add some drums. This could be a good song if you work on it.

Ok...

Well to be honest that was really bad. The melody (if you can call it that), wasn't interesting. It sounded out of time and distorted to the point where you couldn't hear what was going on. There was no structure to the song whatsoever. I know you may say it's Heavy Metal, but even the heaviest of metal follows the same basic principles as any other music. You need to rethink what your producing, spend a bit longer, it felt rushed and was not EQ-ed right at all. Spend a bit time learning the basic music theories/principles, and maybe try and invest in some better software.