In the final map (The Lord of Heresh) Godric is against you. It uses a carryover Godric so if you don’t want that fight to be difficult, avoid levelling up Godric or giving bonuses to him.
But it is a fun challenge to maximize Godric whenever you can, and fight him on heroic later. There is always a way to get him. For example, the Mark of Necromancer gives you unlimited mana!