So, the part where your on the giant cube is fucking impossible. I can't seem to beat it. I get to the part when the giant flame dog shows up, I get on him and raise hell, but around there the minotaurs always break the thing holding the whole cube up. I've probably failed 5 or 6 times.
 
Did anyone else have issues? Is there something I'm missing? How do I keep the fucking minotaurs off of it?

spam L1 square near the chain in the middle its what i did, and i had no problem with it

The Flaming dog that spits up more dogs sucks balls. The best advice I can give you is to use your Rage of Sparta whenvever those things show up.

What I would do is use the Blades Of Exile cause they have more range, and use you bow when ever they get near the chain. If you hit them a couple times the come back at you.