Arkham City: Pay Your Respects Achievement

This achievement in Batman: Arkham City can be a tricky one to find.  First you need to head to the church ner the center of the map, just North of the Restricted zone.  Once there, head to the back alley –Crime Alley if you will– to find the chalk outline on the ground.  Once you land, pay your respects and let the music play.  Once it stops, the achievement/trophy will pop.