Board Thread:Challenge Arena/@comment-152.26.228.66-20131018154317/@comment-4874115-20131018175748

That depends on what season Oliver is drawn from. Season one Oliver had little problem with killing when he needed to (although he did start to try and let the whoever the various villian of the week was live towards the end of the season). As of season two, Oliver seems to have a much stricter "no killing" policy.