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