Here is the full list of all 51 Assassin's Creed II trophies - there are 34 bronze, 15 silver, 1 gold and 1 platinum.
Unlock all trophies.
Wear the Auditore cape in each city.
Unlock all 20 pieces of Subject 16's video.
Collect all the Feathers.
Pickpocket 1000 Florins.
Escape the hideout.
Complete DNA Sequence 14.
Complete DNA Sequence 11.
Complete DNA Sequence 10.
Sweep 5 guards at once by using a Long Weapon.
Tint your clothes with those colors: Wetland Ebony and Wetland Ivory.
Discover the Assassin's Tomb inside the Rocca di Ravaldino fortress.
Get all Hidden Blades, Item Pouches and Armor upgrades for Ezio.
Reach 80% of your stronghold's total value.
Complete DNA Sequence 9.
Discover the Assassin's Tomb inside Santa Maria della Visitazione.
Find the 8 statuettes in Monteriggioni.
Complete DNA Sequence 8.
Kick a Guard while using the Flying Machine.
Spend 5000 florins on Courtesans.
Buy a Painting from Florence and Venice.
Discover the Assassin's Tomb inside the Basilica di San Marco.
Complete DNA Sequence 7.
Complete training and reenter the Animus.
Toss more than 300 florins on the ground.
Stun 4 guards at once by throwing sand in their face.
Complete DNA Sequence 6.
Complete DNA Sequence 5.
Discover the Assassin's Tomb inside the Torre Grossa.
Complete your first assassination mission for Lorenzo Il Magnifico.
Perform an Air Assassination on a Poisoned NPC.
Discover the Assassin's Tomb inside Santa Maria del Fiore (The Duomo).
Intercept a Borgia Courrier.
Complete DNA Sequence 4.
Kill 10 enemies while remaining in conflict without being hit.
Defend a woman's honor.
Win a race against thieves.
Hide 5 dead bodies in a Bale of Hay.
Discover the Assassin's Tomb inside the catacombs under Santa Maria Novella.
Sprint for 100 meters.
Upgrade a building in the Stronghold.
Complete DNA Sequence 3.
Unlock a piece of Subject 16's video.
Use your Eagle Vision to scan a Glyph in the environment.
Complete DNA Sequence 2.
Synchronize 10 View Points.
Complete DNA Sequence 1.
Perform a Leap of Faith from the Top of Florence's Giotto's Campanile.
Enter the Animus 2.0.
Break out of Abstergo.
Be reborn as Ezio Auditore Da Firenze.