The opposition to the character’s goal in this act is the stuff of legend. It is David v. Goliath, Potter v. Voldemort, Kramer v. Kramer, Coke v. Pepsi. The character must face down his opposite on the field of battle with only one of them allowed to walk away. After watching our character attempt to reason or negotiate with the forces of antagonism through the previous four acts, the audience is ready to watch him transform into a stone-cold badass. He must become more than just the character he has been. He must finally become a hero.
