Sacred Tree

Well, I killed the demon, but there are still 32 vampires left. I reached Keleborn, but it seems impossible to defeat him. I read in the thread that the army doesn't grow and he has a three-month-old army, so I was very surprised to see 2000 dancers, 1200 archers, 600 druids, 360 unicorns, 250 ents, and 125 dragons.
Okay, I'll try to replay the entire map slowly, taking into account all the mistakes.