From RoR Wiki
Speak to "Sister Raffaela" in Norsca at 51.7k 57k, on the opposite side of hill as Gotland Advance (Empire Chapter 4), near the "Courageous Villagers".
Speak to "Mathis Rittenhouse" in Norsca at 18.4k 48.7k, sitting on a rock down the cliff.
- Chaos Tactic Fragment
- XP: 806