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.
Escape the hideout.
Complete DNA Sequence 14.
Kill 10 enemies while remaining in conflict without being hit.
Spend 5000 florins on Courtesans.
Wear the Auditore cape in each city.
Collect all the Feathers.
Sweep 5 guards at once by using a Long Weapon.
Unlock all 20 pieces of Subject 16's video.
Stun 4 guards at once by throwing sand in their face.
Discover the Assassin's Tomb inside the Rocca di Ravaldino fortress.
Tint your clothes with those colors: Wetland Ebony and Wetland Ivory.
Get all Hidden Blades, Item Pouches and Armor upgrades for Ezio.
Reach 80% of your stronghold's total value.
Intercept a Borgia Courrier.
Defend a woman's honor.
Complete DNA Sequence 11.
Complete DNA Sequence 10.
Hide 5 dead bodies in a Bale of Hay.
Win a race against thieves!
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.
Perform an Air Assassination on a Poisoned NPC.
Discover the Assassin's Tomb inside the Basilica di San Marco.
Complete your first assassination mission for Lorenzo Il Magnifico.
Complete DNA Sequence 7.
Find the 8 statuettes in Monteriggioni.
Buy a Painting from Florence and Venice.
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.
Toss more than 300 florins on the ground.
Complete DNA Sequence 4.
Discover the Assassin's Tomb inside Santa Maria del Fiore (The Duomo).
Discover the Assassin's Tomb inside the catacombs under Santa Maria Novella.
Upgrade a building in the Stronghold.
Complete DNA Sequence 3.
Synchronize 10 View Points.
Sprint for 100 meters.
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.
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.