Have a Trainee reach the Assassin Rank.

After becoming fully Notorious, kill 10 Jagers before losing your notoriety.

Complete Present - Stadium.

Complete Sequence 7.

Complete Present - Skyscraper.

Retrieve every page for one of Ben Franklin's Almanacs.

Complete Sequence 4.

Complete Sequence 1 & 2.

Re-Enter the Animus.

Finish the game in Easy Mode

Defeat 30 enemies with the T-Bolt Sniper

Defeat 30 enemies with the Arm Micro