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I would level up like this against Haven in the late game (hero level 32-33):
Racial skills: all
Attack: Tactics, Retribution
Defense: Resistance, Reflection, Dodge
Luck: Soldier, Barbarian Luck
Darkness: Darkness, Curse/Education: Fire Fury/Battle: Shout, Mighty Shout (in descending order of importance, /- means either)
Leadership: Speed Aura, Frenzy
