"mercenary" could be a good idea for tag,because mercenary also around the guns games or GTA.the could of the tag could use Army Green.gtm have one similiar job hitman,but I think that "mercenary" could be more cool.if gtm made a tag "hitman" it will make misunderstand on it think that a job,but "mercenary" doesn't,so i think "mercenary" could be a good idea.