you shouldn't use acoustics in metal themed song. Plus when it gets "heavy" it sound like you have recorded something else and threw it on top. The feedback is massive and you can't make it out. If you want to make a drum and bass song, you have the right idea with the metal themed sound but you should add a bass riff with the drums so it pounds. Besides, I wouldn't really classify this as drum and bass but heavy metal instead. Keep trying, you'll get better.
nice n heavy!
Please contact me if you would like to use this in a project. We can discuss the details.