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