The Fanatic faction, known as the Lost, specializes in high Burn application and disruptive movement. Key threats include the Pit Fighter, a massive tank that gains Block and Strength to deliver crushing blows, and Immolated enemies that explode upon death. Heralds and Whippers function as backline stressors, using Accelerate to push their heavy hitters forward. The most dangerous support units are Evangelists and Cherubs, which utilize Worship to empower allies or heal them at the cost of your party's sanity. Physical damage is high here, but the persistent fire damage is the true killer.
To succeed, prioritize killing Immolated units before they can self-destruct for massive AoE damage. Use Move skills to pull Whilom or Herold units into the front ranks to disable their ranged stress attacks. Since most enemies have high Burn Resistance, focus on Blight or Bleed status effects to bypass their defenses. Equipping Burn Salve or using skills like the Plague Doctor's Ounce of Prevention is essential to mitigate the stacking DoTs. High-velocity bursts are necessary to eliminate Evangelists before they can trigger the "Exaltation" buffs from their Worship tokens.
