Inferno – “Angel, angel, burning fear” [Campaign 5 – Mission 1]

Can you give me some advice or a video guide on how to beat the Azazel battle? I've been trying for 3 hours and can't seem to win, and I'm playing on hard difficulty. The biggest problem is that I always end up with 500-700 hounds left, and I can't figure out how to coordinate my units so that I can use Berserk on the fanatics...

Added after 15 hours and 34 minutes
Has anyone beaten the Azazel battle on patch 1.8 on hard difficulty?

I can't beat it, help!