CrossHD

Between the Eyes Kill 100 enemies with a headshot

Box Your Ears Kill 15 enemies with melee attacks

The Marksman Kill 5 enemies with a headshot during Blacksight

From the Hip Kill 25 enemies without aiming

Undivided Attention Kill 25 enemies during Blacksight

Up in Flames Incinerate 15 enemies

Discombobulated Stun an enemy 30 times with the M2 ‘Falchion'

Brilliant! Shoot an airborne grenade during Blacksight

Well-read Inspect all newspapers

Power of Observation Inspect all objects

That's So Fetch Complete all Neon Graffiti

Archivist Collect all phonograph cylinders

Detail Oriented Inspect all photographs and documents

Inspector First Class Find all inspect items

The Grail Collect all Trophies

Lickety Pronto Complete all Lumen Races

Blackout Destroy all Police Drones

Illuminated Collect all Neon Lumens

Novice Complete 25% of all Challenges

Trader In Training Complete your first holocard set.

Trade Up Trade in a set of duplicate holocards for a new one.

Fish in a Barrel 25 Stasis + Weakpoint Kills

That Sinking Feeling Knock a constructobot into the quicksand on Aridia.

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

A Change Of Heart Defeat Captain Qwark on the Deplanetizer.

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

Abby Normal Collect every Telepathopus brain.

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

Professional Complete 50% of all Challenges

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

Kleptomaniac Pickpocket 1000 Florins.

Tech Head Acquire every gadget.

Great Responsibility 50 Hostage Saves

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

Fly Swatter Kick a Guard while using the Flying Machine.

Beta Survival Diamond Achieve a score of 500,000 points

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

Alpha Survival Diamond Achieve a score of 500,000 points

Run Astro Run! Got a total Speed Run time of 7 minutes or under.

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

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

Red Light Addict Spend 5000 florins on Courtesans.

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.

Alpha Rescue Diamond Achieve a score of 500,000 points

Expert Complete 75% of all Challenges

Turret Syndrome Overload 25 Turrets

Full Gun Rack Acquire every weapon in the game.