Doesn't matter which titan you get on the list, each character just has to get on the list. You get 1 reward per character, regardless of how many titans you kill. Of course you are encouraged to kill as many titans as possible, otherwise the destruction and fall of Britannian society as we know it at the hands of these elemental invaders will of course be on your hands.Still a little confusing. Does the event have a top attacker list running in the background, or do you get on a master list for the Part V rewards if you get looting rights on a Titan at all?
Or is it a cumulative thing? If you get on the top attacker list on multiple Titans, do you get 1 reward choice per Titan? Ex: Help kill 6 titans, that character gets 6 rewards.