Invest in Assassin skills
As with Assassins Creed Origins this game offers three upgradable skill trees to customise your character (Hunter skills, Warrior skills, and Assassin skills). When you take into account that the best strategy to approach almost any enemy encampment is stealth where you pick off the enemies individually and engage the last few head-to-head it makes sense that the Skills you need to invest in to employ this tactic are Assassins skills such as Critical Assassination, Stealth Master and Shadow Assassin.