Game: Assassin's Creed Syndicate
Memory: Survival of the Fittest
Style: Lethal / Reaper / Stealth Kills
Jacob Frye systematically harvests the souls of all Blighters in and around the areas he visits while delivering death unto Malcolm Millner.
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Since these areas are often surrounded by water and/or lethal heights, I do a number of kills where I either drown guards or throw them to their doom off a building. It's not very often that Syndicate lets that happen, in my experience, but it was really fun to do so. Finally, I cap off the ending with quite a clever and cruel act, making a lowly Blighter watch his allies kill each other, before ending him too.