A legendary outfit exclusive to Yasuke, the Protector's Armor was one of the first pieces of legendary gear I found in Shadows. Not only did it have by far the highest stats of anything I'd collected up to that point, but it came with a unique perk that's so universally useful that it stuck with me for the majority of my 50 hours in Shadows so far:

The best Assassin's Creed Shadows armor will keep Naoe and Yasuke nice and safe from even the heaviest-hitting enemies they encounter.

Assassin's Creed Shadows weapon and armor upgrades are vital to keeping Naoe and Yasuke fighting fit by increasing the level of any gear you're using. Of course, you can keep swapping your gear for higher-level items as you complete quests,