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