- First you need to get to Level 10, for that you need to learn every Skill
- Then you need to find one of the nine Level 10 schematics, I complete all Templar Hunts for Henry Green to get the Legendary Assassin Kukri Blueprint
- Every Level 10 Item also needs a Unique Material, for the For the Legendary Kukri you need the Ulfberth Blade, that you can find in one of the Gold Chest in Westminster.
I'm working on a all Level 10 schematics and Unique Materials Guide, till it's done you can
find it here