Damn, that was pretty fun, tho the dogs behaved fine during the split
The buffing mechanic when he does the side walk is kinda retarded tho. It's never explained, they don't even give you a visual clue.
If you don't know it, you're kinda fucked, and if you know it... well, you just wait and do nothing.
it doesn't really add anything interesting to the fight, it's just a knowledge check.