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High Dive Perform a Leap of Faith from the Top of Florence's Giotto's Campanile.

…Bada Boom! Defeat 20 Enemies in a row with Homing Missiles

Radical Win the hoverboard Bronze Cup on Kalebo.

A Piece of the Puzzle Unlock a piece of Subject 16's video.

A Change Of Heart Defeat Captain Qwark on the Deplanetizer.

Pool Sharks Are The Worst Get eaten by a Pool Shark in the Pokitaru Ocean.

The End Of The Beginning Defeat Dr. Nefarious on the Deplanetizer.

Man of the People Toss more than 300 florins on the ground.

Abby Normal Collect every Telepathopus brain.

Assassin For Hire Complete your first assassination mission for Lorenzo Il Magnifico.

Steal Home Win a race against thieves.

Go Speed Ratchet, Go! Win the Gold Cup on both Rilgar and Kalebo.

Street Cleaner Hide 5 dead bodies in a Bale of Hay.

Kleptomaniac Pickpocket 1000 Florins.

Professional Complete 50% of all Challenges

Cat Got Your Tongue? Have B-12 translate a robot.

Art Connoisseur Buy a Painting from Florence and Venice.

The Vault Complete DNA Sequence 14.

Tech Head Acquire every gadget.

An Old Friend Returns Escape the hideout.

Great Responsibility 50 Hostage Saves

Podestà of Monteriggioni Reach 80% of your stronghold's total value.

Myth Maker Find the 8 statuettes in Monteriggioni.

Fly Swatter Kick a Guard while using the Flying Machine.

Character Assassination Destroy all of the planet models in Drek's office.

Beta Survival Diamond Achieve a score of 500,000 points

Warbots Into Plowshares Destroy 10 inactive Warbots inside the Quartu factory.

Curiosity Killed the Cat Wear the paper bag.

Victory lies in preparation Get all Hidden Blades, Item Pouches and Armor upgrades for Ezio.

Red Light Addict Spend 5000 florins on Courtesans.

Alpha Survival Diamond Achieve a score of 500,000 points

Perfect Harmony Tint your clothes with those colors: Wetland Ebony and Wetland Ivory.

Doctor Perform an Air Assassination on a Poisoned NPC.

Kerwan Gladiator Complete the Fitness Course on Kerwan in under 70 seconds.

Top Gunner Defeat 40 enemies while jetpacking in Gaspar.

Full Gun Rack Acquire every weapon in the game.

Safecracker Complete every Trespasser puzzle without using AutoHack.

Alpha Rescue Diamond Achieve a score of 500,000 points

Expert Complete 75% of all Challenges

Turret Syndrome Overload 25 Turrets

Ultimate Explorer Collect every gold bolt.

Clank Crusher Crush 5 gadgebots in the crusher on Quartu.

Cat-a-Pult Jump 500 times.

Gamma Survival Diamond Achieve a score of 500,000 points

When Sheep Fly Sheepinate a Blarg Helicopter Commander.

I Hate Lamp Break every lamp in Aleero City.

No-hitter Kill 10 enemies while remaining in conflict without being hit.

Et tu, Copernicus? Find Qwark's Lounge on the Deplanitizer.

Lazy Lombax Ride every catwalk without moving in Kalebo.

Well Read Read 10 notes (Campaign only).