Has anyone used the "Forgetfulness" spell (level 3)? It's awesome. On expert difficulty, during an attack on neutral creatures, none of the archers shoot; they just attack in melee. I laughed when an archer came at me with his little pocketknife (when he engages in melee combat, responding to an attack or attacking something from who-knows-where). It's really cool. I don't know how it works against a leveled-up hero, but neutral archers don't bother me anymore.
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I agree, especially when fighting legions of cyclops or titans. Of course, for titans, you also need the "Vulnerability" medal.