Monster Hunter World: Iceborne - Hellish Fiend Vaal Hazak Quest Walkthrough

A walkthrough on the quest Hellish Fiend Vaal Hazak in Monster Hunter World: Iceborne. Included are the quest's objectives, monsters encountered, and rewards

Monster Hunter: World Iceborne - One for the History Books

Hellish Fiend Vaal Hazak


Complete the Assignment
Area Time Limit Reward Failure Conditions
Rotten Vale 50 minutes 18,000 z Time Expires / Faint 3 times
Unlock Conditions
Clear Rotten Vale investigation


Target Vaal Hazak
Other Girros, Raphinos


Item Rate
Elder Dragon Bone TBC
Vaal Hazak Carapace TBC
High Commendation TBC
Elder Dragon Blood TBC
Deceased Scale TBC
Dreamcore Ore TBC
Dragonvein Crystal TBC
Vaal Hazak Talon TBC
Vaal Hazak Membrane TBC



Ideally, you’ll want a fire weapon when fighting against Vaal Hazak. You can hunt down Rathalos to forge one. While optional, you can also use a cleanser booster along with it if you finished the side quests.

Vaal Hazak has a penchant for casting effluvium, a pesky ailment that temporarily cuts your health pool. Before you pursue the monster, be sure to gather a couple of nulberries. If you wish to put an end to its health halving shenanigans, bring miasma gems.

Bring a stash of medicines like mega potions and max potions. To bolster your magic resistance, swing by the canteen and order a Veggie Platter.

Vaal Hazak

When you’re ready to take it on, proceed to area 16 to initiate the assignment.

Vaal Hazak Monster Guide

If you have one in your inventory, drop a cleanser booster nearby before engaging with Vaal Hazak.

When it’s enraged, it will cloak itself in effluvium which deals damage over time. If you don’t have a cleanser booster, be ready to consume a nulberry to instantly remove the ailment.

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