Freewill

Freewill was a virtual representation of one of Shay Cormac's genetic memories stored in the Helix, relived by a research analyst through the Animus.

Description
Following the disaster in Lisbon, Shay went to confront his Mentor at the Homestead.

Dialogue
Hope intervened, putting herself between Shay and her Mentor. Liam entered the room and helped Hope with restraining Shay. Later that day, Shay mulled over the events at a campfire. Having made up his mind, Shay made his way towards the manor. Shay entered the manor and went upstairs to steal the Manuscript, which was kept in a locked drawer. Using his Hidden Blade, he broke open the lock and procured the document, though he was discovered by Achilles. A struggle between the two men began, during which Shay briefly managed to overcome Achilles. Using the opportunity, he escaped the manor by jumping through a window and landed safely in the snow. As the Assassins spread out, mortar fire began raining down on the area. Just as Shay reached a narrow pass, Liam attempted to block his former friend's path by shooting an explosive barrel and triggering a small avalanche, though Shay still managed to slip through. Shay continued running, evading his pursuers and Hope's smoke bombs as he did so. Eventually, Shay reached a dead end, coming to a stop atop a cliff overlooking the bay. His former Assassin allies quickly caught up with him, with Liam pointing a gun at Shay to keep him from running away again. Walking towards the edge of the cliff, Shay was shot in the back before falling down and plunging into the bay.
 * Shay: So what's the next city you want me to smite?! What happened in Haiti happened in Portugal. A great earthquake. Thousands dead, thanks to your damned Manuscript!
 * Achilles: This cannot be.
 * Hope: Shay, a person cannot start an earthquake.
 * Shay: A person meddling with these Precursor machines could. You saw the Box, Hope. The Temple was filled to bursting with that kind of power. You made me slaughter innocents!
 * Hope: How dare you!
 * Shay: You defend him? Achilles sent me in there like Mackandal sent his man in Haiti. He knew.
 * Liam: What the hell's going on? Stop this!
 * Achilles: The operation was delicate, perhaps you-
 * Shay: You are shifting the earth itself. Who are you to decide what city falls next?
 * Achilles: Get him out of here.
 * Shay: Liam is a fool if he thinks I'll leave this be. Achilles cannot be trusted. He must never find another Precursor Temple. I don't care that he's Mentor, or that his family is dead. There's no excuse for this level of madness!
 * Shay: Only one thing to do.
 * Shay: There's no turning back now...
 * Achilles: I had such hopes for you, Shay.
 * Shay: Achilles. I have to do this.
 * Achilles: And what is it you're doing exactly? Stealing from your Brothers? Betraying me?
 * Shay: Someone must make amends.
 * Achilles: Make amends? You have no idea what you're doing. The future of the whole continent, maybe the whole word, is tied up in that Manuscript.
 * Shay: Perhaps. But we don't have the right to decide that future.
 * Achilles: The right? We have the responsibility!
 * Shay: We are responsible for killing innocents and destroying cities! This... mad grab for power. It ends now.
 * Achilles: I will not let you destroy everything we have built!
 * Achilles: Assassins! Stop him! Stop Shay!
 * Assassins: Mortars! Has Chevalier gone mad? He'll destroy the manor! Take cover! Move! Get out of here! Watch out! What is de la Vérendrye doing?! Chevalier's using mortars to stop Shay! What's he thinking? He'll blast us to pieces!
 * Hope: You won't hinder our plans! How could you, Shay? Have you gone mad? Haven't I taught you anything? Won't you listen to reason, Shay?
 * Kesegowaase: I will not let you run away.
 * Liam: That's enough!
 * Hope: Give back the Manuscript, Shay. I'm sure Achilles-
 * Shay: I cannot. I will not let this happen again. All those souls lost... One more hardly matters.
 * Liam: Shay!

Outcome
Disillusioned with the Assassins, and his Mentor in particular, Shay attempted to escape the Homestead with the Manuscript, in an effort to prevent them from finding more Precursor Temples. Although the Assassins caught up with him, Shay jumped into the bay, preventing his former allies from recovering the Manuscript.

Reference

 * Assassin's Creed: Rogue