User blog comment:SethOmega/Bracchidios Discussion/@comment-108.199.194.232-20130420222832/@comment-195.218.29.19-20130424185215

Well in my case I've used the Ice Hammer (made from the SubSpecies Barroth) and after 15 min bashing the hammer on him, he limped and caught him with a trap.

I believe the Dual Blades don't deal enough dmg on him unless they're made from high Ranked monsters.