The The Da Vinci Disappearance Add-on for Assassin's Creed: Brotherhood has 10 achievements worth 250 gamerscore.
Receive 100% synch in ACB and full synch in all missions of the Da Vinci Disappearance.
Throw a Long Weapon, Heavy Weapon, and Smoke bomb more than 10 m at a guard.
Steal 5 horses from their riders, while remaining on horseback.
Kill 10 guards with a single arrow storm.
Beat up the 5 thirsty harlequins.
Win 10000 florins playing Hazard.
Complete the Da Vinci Disappearance.
Double Assassinate from a parachute.
Pay 500 florins to an orator, then pickpocket him afterward.
Kill a guard with the bag that drops from a lift.