Complete the following achievements to unlock Xbox Live Gamerscore points.
Additionally there are five secret achievements.
Complete the indicated task to obtain the corresponding piece of clothing. You can change Arno's appearance at the "Character Customization" menu or from the Gear Loadout statue in a Café.
Complete the following tasks to earn the indicated amount of Creed Points. Creed Points are used for upgrades at the "Character Customization" menu.
Complete the indicated number of crowd events to receive the corresponding reward.
Complete the following Heist co-op mission to get the corresponding reward. Each heist also contains a bonus reward which is reduced if a player in your party is discovered. If a player dies during a heist, they cannot respawn. Heists are assigned random enemies, chests, and access points.
To complete the Nostradamus Enigmas, find series of symbols with Eagle Vision. Each symbol has a riddle which once solved, leads to another symbol. All symbols are located in the same area. Synchronize all View Points in the area to make the process easier. After all symbols of a puzzle are found, Arno will get a Fragment which can be used in a secret room of the Café Theater in the Mansion's Basement.
Skills are purchased at the "Character Customization" menu with Sync Points after they are unlocked. Sync Points can be earned by completing main story memories, co-op missions, and finding collectibles during co-op missions. There are two types of skills, Active and Passive. Arno can only have a total of four Active Skills.
There are seven Social Clubs that can be opened in various locations throughout the city. Spend the indicated amount of money to renovate them to get an income bonus for the chest found in the Intendant's Study at the Cafe Theater, a song, and the ability to Fast Travel to that location.