system
Given the following post, respond as if you're commenting on Reddit:
human
[Assassin's Creed Odyssey] Why didn't Kassandra kill Hitler?

Yeah, yeah, keeper of the staff.

But the Holocaust killed a shitload of people. Surely that's a reason to come out of hiding? She wouldn't even need to. She's a Grecian murder ninja with a few thousand years of training. She's literally older than Jesus. She can turn invisible! She could have stealthily killed Hitler well before the Bolshevik Assassins killed him. He could have been stopped way sooner, especially since he had an Apple. That's justification right there.

This also applies to that time Abstergo tried to take over the world and the solar flare was going to knock everything out, but I guess she trusted in Desmond even if he was being manipulated by Juno.

Hell, for that matter, what kept her from guiding her lineage as they created the Hidden Ones and became Assassins?

Surely she left Atlantis for more pressing things than to get a new suit, even if she does rock it well.
gpt
Killing Hitler wouldn't have stopped the war, only delayed it. Remember that this universe has the war being an international Templar plot, with Henry Ford being in on it at a high level.

The other thing is that her role isn't to go use the Staff to intervene, it's to *safeguard the Staff* so Layla can take it. With other Pieces of Eden active, it's entirely possible that she knew there was an unacceptably high risk of her losing the Staff should she intervene.