Chemicus Nocturnus is a Limited-Time Quest Event in Monster Hunter Wilds (MH Wilds). See event duration, rewards, location, strategy, unlock condition and should you farm?
Event Quests ListTable of Contents
Chemicus Nocturnus - Event Duration & Rewards

Event Period | Until 05/06 (Tue) 3:59 PM (PST) |
---|---|
Objective | Hunt the Rompopolo |
Map | Oilwell Basin (Morning/Fallow) |
Main Reward | Firestone |
Reward Money | 5,760z |
In Monster Hunter Wilds, the main reward for the limited-time event quest 'Chemicus Nocturnus' is 'Firestone'. It's also a great opportunity to collect other materials like 'Machalite Ore' and 'Dragonite Ore.'
Firestone Can Be Obtained

The event quest 'Chemicus Nocturnus' is ideal for gathering materials such as 'Firestone', 'Machalite Ore', and 'Dragonite Ore'. You can typically collect around 1 to 3 Firestones per run, making it a valuable quest for forging weapons and armor.
How to Get Firestone & UseQuest Completion Rewards (Random)
Quest Rewards | |
---|---|
Firestone | |
Monster Material | |
Rompopolo Certificate | Rompopolo Hide |
Rompopolo Beak | Rompopolo Claw |
Spotted Poison Hide | Poison Sac |
Machalite Ore | Dragonite Ore |
Sturdy Bone | Charred Oilbone |
Chemicus Nocturnus - Strategy Guide
- Accept the Event Quest (HR3 or Higher)
- Recommended Starting Point is Base Camp
- Hunt the Rompopolo
Accept the Event Quest (Online)
To accept the 'Chemicus Nocturnus!' event quest, either talk to Alma or open the quest menu from your Camp while online. You must be HR3 or higher to accept the quest, so if your HR is below the requirement, progress through the main story first.
Recommended Starting Point is Base Camp

The target monster Rompopolo initially spawns in Area 7. As Area 7 is in close proximity to the Base Camp, starting the quest from the Base Camp is recommended.
Hunt the Rompopolo

Rompopolo is weak to the Water element, but there's no need to forge dedicated equipment or weapons specifically for this hunt. If you already have a Water element weapon, equip it to improve farming efficiency.
Elemental Weaknesses
Monster | ![]() | ![]() | ![]() | ![]() | ![]() |
---|---|---|---|---|---|
![]() |
Effective Status Ailments
Monster | ![]() | ![]() | ![]() | ![]() | ![]() |
---|---|---|---|---|---|
![]() |
Traps Effective for Capturing
Monster | Shock Trap | Pitfall Trap |
---|---|---|
![]() |
Chemicus Nocturnus - Rompopolo Strategy
Prep | Bring Antidotes or Herbal Medicine |
---|---|
1 | Attack to Deflate Its Gas Sac |
2 | Focus Strike Its Tongue Before or After Poison Spit |
3 | Counter Tail Thrust With Evade or Breaking Wounds |
Bring Antidotes or Herbal Medicine
Certain attacks from Rompopolo in Monster Hunter Wilds inflict the Poison status. To minimize downtime and maintain combat efficiency, prepare Antidotes or Herbal Medicine beforehand to recover quickly when afflicted.
Attack to Deflate Its Gas Sac
Rompopolo's head and tail inflate like balloons, enabling it to unleash disruptive Poison and gas-based attacks. Accumulating enough damage to it causes the gas sacs to shrink, triggering a knockdown and weakening its movements. While it's inflated, stay aggressive and aim to force a deflation to gain the upper hand.
Focus Strike Its Tongue Before or After Poison Spit
Rompopolo exposes its weak point, the head, when preparing to spit Poison. Take this opportunity to land a Focus Strike from the side of its face. This can interrupt the attack and trigger a knockdown, opening a window for further damage.
Counter Tail Thrust With Evade or Breaking Wounds
Rompopolo's tail thrusts into the ground beneath its body and triggers a wide-area explosion that can be difficult to evade. In many cases, standard dodging isn't enough. Using an emergency evade, guarding, or, if wounds are present, interrupting the move with a Focus Strike to break the wounds is especially effective at stopping its action.
Monster Hunter Wilds Related Articles

Story & Optional Quests
Main Quest Guides | |||
---|---|---|---|
![]() | ![]() | ![]() | ![]() |
![]() | ![]() | ![]() | ![]() |
Quest List by Level Difficulty | |||
![]() | ![]() | ![]() | ![]() |
![]() | ![]() | ![]() |
Walkthrough per Chapter
Full Story Walkthrough and GuideOther Quest Guides
Quest Related | |
---|---|
▶ Collaboration | ▶ Multiple Monster Quests |
▶ Gold Crown Quest | |
Story Related | |
▶ Head Toward the Forest | ▶ Search for the Black Flame |
▶ View the Forest from Atop a Tree | ▶ Ferdinand's Location |
▶ Olivia's Location | ▶ Murtabak's Location |
▶ Tasheen's Location | ▶ Rosso's Location |
▶ Zato's Location | ▶ Rove's Location |
▶ Rhino's Location | ▶ Werner's Location |
▶ Plumpeach's Location | ▶ Estimated Completion Time |