Assassin's Creed Odyssey isn't always great with its writing, but there's a few moments I like.

First one: You've quested to get an audience with Nikolaos, Kassandra's father that threw you and your infant brother from a mountain by orders of the villains. You're given a prompt to kill him, or question him. If you choose kill, then Kassandra lunges at him, announcing her intent...but then relents, shirking back, deciding it's not worth it. He says, gently, that he loved her, and her brother. That line hits the berserk button, and Kassandra immediately thrusts the spear through him.

Second one, when you've finally cornered one of the top cultists that nearly engineered an election in his favor, you get a simpler prompt: Either kill him quickly, or drown him painfully.