This was done with no prior save.

Defeating the Boss without Passwords:

• Select Sokka before entering the Boss Area and use "Enrage" and "Frenzy" as a combo and Melee the Boss until he is defeated.
• Get close to the Boss and let him Melee attack you. Back off to avoid his Hitbox and then do the above. Repeat this process until the Boss is defeated.

Defeating the Boss with Passwords:

• Select Sokka before entering the Boss Area and use "Chain Attack" or preferably "Mass Scare" as soon as you can.
• "Mass Scare" dishonors a enemy instantly, "Chain Attack" however will knockback enemies before dishonoring.