Assassin's Creed Shadows will give you the option to switch on guaranteed one-shot assassinations, Ubisoft has confirmed.
For some context, in pre-Origins Assassin's Creed games, if you managed to position yourself behind or above an enemy target unseen and you performed an assassination, that target became not alive. However, when the series grew out of its stealth-action roots and took on more RPG elements, it stopped guaranteeing one-shot assassinations, instead going off of your level, stats, and your enemy's health bar.
