As in 1.5, I decided to level up Godric significantly. Isabel trains knights in her name in the castle. I like them more than paladins. But that's a matter of taste. Godric clears the surrounding areas.
It's unlikely that I'll be able to level up Godric to level 24. In 3.0, enemies flee the battlefield like rabbits. Even Agrael ran away quickly. Only Daleb fought to the last. But she was level 1. Therefore, Isabel easily defeated her.
It was a waste to take chests with money at the beginning of the mission to build the castle faster. In 3.0, you can build the castle without rushing, without hiring troops. The starting army is enough to make any demon flee on the hero. Therefore, there are practically no losses.