From what I can tell, innate dual wield is just granted to level 66+ NPCs by hardcoding; every level 66+ NPC I've looked at quad attacks. Even NPCs of the same type with level variance will double at 65 and quad at 66.
This would help explain why boss NPCs were often level 66 (particularly in Luclin). Along with the old taunt skill becoming unusable on NPCs 6 or more levels above the player, as well as the resist algorithm behaving differently at level 66+.
|