The Loser's Guide to Winning: Raining Blood

PLEASE READ ALL:
A little guide put together with hints and tricks that help you pass Raining Blood on Expert
NOTE: I didn't make this to show off my skills. I know there are so many people better than me. I made this video to help.
EDIT: I noticed people think I suck, and as I said before, I don't really care. I had problems with beating certain parts of this song, and now I want to give hints to others to complete it. If you already beat it, or five starred it, or whatever, I don't really care. Woopdie doo, go post on someone else's video.