Complete a Path of the Hunter quest.

Identify Black Mask's assassins

Taught 3 or more of the teens a lesson, or started the house fire, with Aiden.

Played as Aiden for the first time.

Synchronize 10 View Points.

Perform a Leap of Faith from the Top of Florence's Giotto's Campanile.

Unlock a piece of Subject 16's video.

Complete your first assassination mission for Lorenzo Il Magnifico.

Purchase all skills in one category.

Kill 75 enemies with the rifle.

Loot 200 enemies.

Find 25% of GPS caches.

Kill and loot 10 large animals (deer, boar, wolves).