In the first 4 games, there were terrible evils that had to be sealed, banished, or prevented from being released. Some, at great cost. In the final game, the Dragon of Doom is unleashed. It is said that someone must sacrifice their life to bind it again. The player can choose to take a stand. No more sacrifices. Kick the dragon's ass. And then do it again. And finally....the Dragon will be in so much pain from the asskickings you've given it; it will sacrifice ITSELF just to escape you.