For other Black Mages, who, like me, failed their first attempt at Big Trouble in Little Ala Mhigo, even though they had the soul crystal equipped and even though they tried what is mentioned in this thread, here is what worked for me. Stand off to the right where you can see the approaching attackers, the meleeing big guy, and also the healing shaman who will be in the far back. My impression was that the point of the fight is to encourage you to coordinate with the melee and look out for the other ranged team members, especially the healer! Focus fire with Wilred, stay out of the knot of melee, and keep attackers off the healer. Also, don't forget that your sojourn as an Archer gave you Virus to debuff the big attacker and Raging Strikes to help save you when you need to beat an attacker down quickly cuz they left the melee to attack you.