You need to kill this boss (the moving one) four times.
Drop: Forshura's Hook
General Feng: Naught
(401 512)
Water Melee
Level ? 2.926.556 HP
This boss has a physical aoe and an aoe debuff (reduce max HP)
Drop:
• Feng's Iron Bars
• Feng's Steel Armor
Cosmoforce: Naught
Lot Mode (413 525)
No elt Melee
Level ? 2.875.167 HP
He has four buff (increase his patk, matk, pdef and mdef)
Drop:
• Giant Ape's Skin
• Giant Ape's Palm
Soulripper: Naught
Lot mode (380 509)
Metal Melee + Magic
Level ? 2.156.376 HP
Drop: Mane of Consumer of Souls
Astralwalker: Naught
Lot Mode (401 525)
No elt Melee + Ranged
Level ? 4.000.000 HP
When his life go under 75% (a minion appeared).
When his life go under 50% (two other minion appeared).
When his life go under 25% (three other minion appeared).
Drop:
• Dust of Stars
• Touch of the Seven Luminaries