Combat for the game was rebuilt, with fencing being used as an inspiration for the new system. In addition to returning weapons from previous games, Assassin’s Creed Unityintroduces the Phantom Blade. The Phantom Blade uses the mechanics of a crossbow to fire a silent projectile a great distance, while still serving the same role as the Hidden Blade in previous Assassin’s Creed games. Navigation for the game was also overhauled. Ubisoft created new “Parkour Up” and “Parkour Down” mechanics to make it easier for the player to scale buildings in either direction. Additionally, Arno learns new parkour moves throughout the game, but the player can also purchase new skills as well. With the updated, larger crowds, new interactions with them are also available. The crowd regularly presents many activities, appearing organically, that the player can choose to engage with at their leisure. Examples include interfering in a fistfight, or chasing down a pickpocket.
For the first time, the series will allow players to customise the character, adopting a skill tree that enables players to assign points earned through gameplay to improve their skills in stealth, mêlée and ranged combat, health and traversal. Players will also be able to customise their weapons, armour and equipment to further complement their individual style of play. They will also have a wider selection of weapons available, including swords, axes, spears, polearms, pistols and incendiary devices.
Assassin’s Creed Unity also introduces cooperative multiplayer to the series. Players can enter taverns, which act as social hubs in the game, where you can see if any friends are playing the game at the current time. If they are currently in a mission, they will appear as a “ghost” version of their player, allowing you to approach it to request to join their mission. If accepted, you are transitioned to their game and both of you reset to the most recent checkpoint, and continue on from there. Up to four players can join together in this fashion. The player will take on the role of Arno within their own game, with other players appearing as randomly-generated Assassins. Many missions and activities will be available for cooperative play (which the player can also complete on their own), but there are some story missions that are set aside to be single player only.