Corvo "Madlad" Attano

Screw over a gangster and take care of the Pendleton Twins indirectly exchange for a worthless safe code...since I looted the thing bare before leaving.

Find an invitation to the social event of the season. Attend as myself: the most wanted man in the isles. Walk in the front door, bold as brass. Pick everyone's pocket. Steal everything not bolted down. Sneak upstairs, rob the Boyles blind. Learn who the target is. Seduce her into leaving the party. Take care of her. Return to the party. Eat and drink everything in sight. Sign my name in the guestbook. Walk out the way I came in.

Didn't kill a soul, unseen as a ghost, left with a fortune.

Absolute menace.