This part IS (still haven't beaten it either) tough and I really don't have any advice to offer to you, but I would like to complain to some of you people posting.
Most of us who still haven't beaten probably don't want to hear "OMG lyke, u suk. lol, I beat this on proud mode! It was easy"
To tell you the truth, no one gives a crap. We just want some ADVICE, not people who spell like a three year old, bragging that they have already beaten the game on proud. Okay? Okay. And chances are, if you spell like a three year old, you probably haven't beaten the game. So give advice or brag elsewhere.
Preach broken soul, tell it like it is. you people that brag need to go get a job cause your taking the fact that you beat a mass of pixels like it was the best thing that ever happened to you and that your going to get head for the rest of your life or something so CHILL its not like were going to put you on a pedistel so if you want to brag go to your mamma.