Necromancer – “Ruler of Erathia” [Campaign 3, Mission 5]

Arjien, with Godrick as the hero, the increase in angels, paladins, archers, and heavy infantry far exceeds the increase in troops from two castles. Also, you'll have to fight Markel in the 6th campaign. Therefore, it's not worth leveling him up too much in this mission. It's better to eliminate Godrick at the end of the first week.