- Follow these steps:
Step 1: Go to Trials of War and Tests of Wisdom.
Step 2: Kill these 3 captains: Lorm (burn), Zathra (burn) and Flak (flies Morgai).
- You don't need to kill them with fear just meet their fear requirement and then kill them. (thanks to mcnichoj for the clarification)
Step 3: Quit the game, and repeat step 1.
- You have to do this 7 times,
and challenge unlocked!