Added after 1 hour 46 minutes
With great difficulty and loss, I managed to defeat him with the Archers and Cannons, but after capturing the castle with 10k harpies, I don't know where to go next. Taking the blue key is pointless; there's no Dragon Blood; I don't know how to kill the hero with 2100 Minotaurs, and in a week, a strong Necromancer with 200 dragons will appear. The Lord of the Ring