The rest of the boss equips.

Unless party lets you solo, it's impossible to fight boss alone. At least 3 members needed. I wanted to solo it too, but i guess not =[

EDIT: From what I know/experienced, the boss has 180,000 HP and hits 250 avg both magic and physical.

To add to this, the fire attack has about 300% forward range and has the ability to sometimes stun, and the death reaper attack has about 300-400% forward and backwards range, knocks you back about 200-300% and always inflicts zombie status.

EDIT: ninja'd