I'm Batman! (Perfect Freeflow 2.0 achievement in Arkham City GOTY) 

Batman Arkham City - Perfect Freeflow 2.0. Performed a perfect combo including all of Batman's combat moves in Wayne Manor Armory, level 2. The moves needed for the achievement (14 in total): Punch, Counter, Evade and Redirect, Stun, Beatdown finisher, Aerial attack, Ultra stun, Combo batarang, Instant takedown, Batswarm, Multiple ground takedown, Disarm and destroy, Ground takedown