I can't one-hit assassinate anyone, it's obviously not an AC game.

[Frostbite]

https://youtu.be/nQ0a_KF8ShE

[Coffee Addict]

get the knife of dallwun and you'll be one shotting everyone

https://assassinscreed.fandom.com/wiki/The_Knife_of_Dallwun

[Cursed Life]

You need the right assassin build to do that.

[longjohn119]

Funny thing here is I did a similar video in the exact same fort using a Hunter build and assassinated everyone except 3 guy and it would have been only one if one of the NPCs hadn't gotten stuck in an area I couldn't get to him without getting seen. The only ones that are hard are the Elites and Mercenaries. There was one guy I knew I wouldn't be able to one hit so I released a caged lion and let him whittle down some of his health and then I was able to one shot him.

https://youtu.be/zSXZTYawbGw