Completed a level in a single playthrough without dying

Obtain the Elegant Suit.

Get one Chaos Emerald.

Access your email in 2012.

Collect All Feathers.

Jump with the parachute off the top of Castel Sant'Angelo.

Earn 3 gold medals in the Animus Virtual Training Program.

Complete DNA Sequence 9.

Perform a double or triple escape (Multiplayer Only).

Kill a guard with a broom.

Destroy the Bomber.

Complete DNA Sequence 7.

Throw money in a well.