- New and Improved Naval Gameplay: Cast off in your ship, The Morrigan, and fight your way through the icy seas of the North Atlantic and the narrow waters of America’s river valleys.
- New enemy tactics: Defend yourself from Assassins as they attempt to board your ship and overthrow your crew. Fight them off quickly to avoid losing too many crew members.
- New weapons such as burning oil, which leaves a trail of fire behind to burn enemy ships, and the puckle gun, capable of delivering continuous machine-gun-like fire.
- Shay’s story will allow you to explore three unique environments.