Complete the training task given to you and report back to Boreas.
Step 1. Use Daevic Fury IA Gladiator skill which requires the consumption of DP. (x10).
Step 2. Report your training to BoreasPreceptor of Gladiators and Templars. He is in the Protectors Hall of Sanctum., the Preceptor of Gladiators and Templars.