"Ashes of the Fallen" - "Beasts and Bones" [Campaign 2, Mission 4]

I attacked a yellow Castle with Arantir, just for fun, even though both heroes already had the maximum available experience before the attack. I had about 2300 skeleton archers, 250 alt. liches, 1000 alt. ghosts, 340 vampire princes, 74 astral dragons, and 170 banshees (undead). There were also zombies, but since they didn't participate in the battle, I didn't list them. The main problem, of course, was with the cyclops. I messed up badly with the vampires, thinking I was sending ghosts to counterattack, but I sent vampires instead. And, unfortunately, their ability to stun didn't work, and despite the cyclops' unsuccessful attack, they took down all the vampires in one hit. I couldn't even restore some of them. I killed their units with berserk and control, of course, and by summoning clones, elementals, and a phoenix. The battle took about 20 minutes because I was thinking a lot to minimize my losses.