#1
It's similar to darkest hour and august burns red. Intro (first 10secs) is improvized because this was recorded without a metronome and original intro is really hard without it Guitars were recorded in one go so there are few mistakes. 2 guitars and drums.

http://soundcloud.com/reagges/darker-than-black
#2
I dont know if you did these drums on some software? If you didn't, I feel sorry for your feet.
#4
Drums are made with ezdrummer, of course it's not me, i play only guitar :P