Castlevania: Dawn of Sorrow guide NDS Q&A

Q:

Hey ive got every soul every weapon full map except alucards sword and draculas tunic I know how to obtain alucards sword but how do I obtain draculas tunic ? I cant find it and they are the only things I need to obtain every item !

Q:

I have beat the boss (rahab) in the subterranean hell . but don't know what to do or were to go ,?

Q:

How do I even get past the first level. Once I have beaten the boss with the first seal, how do I get the sword she dropped as I cannot jump that high?

I am stuck!

Q:

How do I get through the doors that look like metal screws, I cant seem to get through to continue the game.?