What phase are you stuck on?
I've only done it on normal difficulty but found it fairly easy, as it's just a mix of combat styles we've seen before... just use the same sort of tactics you'd usually use against each type of attack and you should be fine.
I loved all of it.
I don't usually like instant death sections of games, but found it made the first section a lot more fun than I was expecting, and I actually forgot about the obliterator for the majority of it, only using it as a reflex if an enemy got too close. It also had the most...