Unlock Location:
- Progress through the story until reaching Dominion Region.
- You will find a Order bunker called Iron wall Resolve in the Terminus District.
- Complete the Bunker and at the end you will find Directive-O.
Farm Method:
- Defeat Directive-O inside Ironwall Resolve Order Bunker.
- After use the Encore Machine nearby to reset the fight.
- Repeatedly defeat Directive-O until
Rowan's Charge drops.