Tactics for Dungeon.

A good Hero is Gunnar. + Minotaurs. Eyes. Medusa. Dragons. Harpies. Mana Vortex. Artifact merchants (I rarely build them, but they are definitely useful sometimes). Level 5 magic guild, focused on Fire and Earth. +1500 exp for each Hero in the castle. The summoning portal is useless - it takes too long to find a Dragon hiring hall for summoning... - Scorpids (utterly weak). Building costs (requires all resources, but in small amounts) > slow initial development speed. Trogolodites. Approximately like that.