Whitemane and Mograine protect each other, defeat them at the same time! In whispers, tavern gossips debate: Is it Momane, or Whitegraine?
Left boss has Resist and elemental damage. Right boss has Armor and physical damage. Keep this in mind when sending Minis. You must kill both bosses at the same time in order to win. Use Unbound Minis or spells to deal damage to to the other boss to prevent them from resurrecting.
For every PvE mission, there is a campaign version and a Heroic version. When you first begin the game, you can only participate in campaign missions. Upon collecting 50 sigils, you will then unlock Heroic missions.
Campaign missions will grant rewards after the first successful clear with ANY family. Heroic missions must be completed with EACH of the 5 different families in order to receive the mission rewards.