Kanteed's method is the standard, but could use some streamlining for efficiency. I've solo'd this for a friend several times. I suppose it counts as duo, but he's useless and stands there like a tool.
Personally, I just use ramuh or shiva. Kanteed's pets all did 234 damage flat which would imply a cap but I'm pretty sure I've broken that using those two pets. That could be my merits though, so it's hard to say (that and looks like his summon skill wasn't capped?).
He also runs way too far wasting precious BP time. Basically hug the wall and 98% of the time no goblins around. Run only until your pet dies, which is plenty of range to recast (that and unless movement+, not gaining distance on them anyway).
But all in all, this can be defeated in only 2 BPs, probably either with elemental bonus of shiva/ramuh on the mobs, or with merits. Tapping yourself out and having to resort to Carbuncle is rather risky. (He switched to Carbuncle because his AF was about to wear any second, and even with mitts, carb's not free at that level. 1mp/tick)