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This is a guide for One Helluva Sinus Infection, a Quest appearing in Monster Hunter World (MHW). Learn about One Helluva Sinus Infection's availability, unlock conditions, target Monsters, and rewards for completing the Quest here.
List of Contents
| Clear the quesst "The Encroaching Anjanath". |
| Lv | ★4 | Destination | Ancient Forest |
|---|---|---|---|
| Type | Optional | Research Points | 280 |
| Time Limit | 50 minutes | Reward Money | 4320z |
| Objective | Hunt an Anjanath | ||
| Other Conditions | HR4 | ||
| Name | Starting Area | Visited Areas | Rest Spot |
|---|---|---|---|
 Rathalos
|
16 | 1 / 5 / 8 / 14 / 16 | 16 |
 Anjanath
|
2 / 10 | 1 / 2 / 3 / 4 / 5 / 6 / 7 / 8 / 9 / 10 / 11 / 12 | 13 |
 Great Jagras
|
2 | 1 / 2 / 3 / 4 | 2 |
 Tobi-Kadachi
|
14 | 5 / 11 / 12 / 14 / 15 | 14 |
Ancient Forest Maps and Materials
| Monster |  |
 |
 |
 |
 |
|---|---|---|---|---|---|
|
Rathalos
|
✕ | ★ | ★★ | ★ | ★★★ |
|
Anjanath
|
✕ | ★★★ | ★★ | ★★ | ★ |
|
Great Jagras
|
★★★ | ✕ | ★★ | ★★ | ★ |
|
Tobi-Kadachi
|
★★ | ★★★ | ✕ | ★★ | ★ |
| Item | Appearance Rate |
|---|---|
| Armor Sphere+ | 1% |
| Ancient Bone | 16% |
| Bitterbug | 12% |
| Honey | 15% |
| Machalite Ore | 11% |
| Monster Bone L | 28% |
| Monster Bone M | 17% |
| Rathalos Shell | Rathalos Marrow |
| Rathalos Tail | Rathalos Webbing |
| Rathalos Plate | Rathalos Scale |
| Anjanath Plate | Anjanath Scale |
| Anjanath Fang | Anjanath Pelt |
| Anjanath Tail | Anjanath Nosebone |
| Great Jagras Scale | Great Jagras Hide |
| Great Jagras Mane | Great Jagras Claw |
| Tobi-Kadachi Claw | Tobi-Kadachi Electrode |
| Tobi-Kadachi Membrane | Tobi-Kadachi Pelt |
| Tobi-Kadachi Scale |
| Iceborne | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
 Assigned Quests |
 Optional Quests |
||||||||||
| Low/High Rank | |||||||||||
 Assigned Quests |
 Optional Quests |
||||||||||
| Event Quests | |||||||||||
 Iceborne Events |
 Low / High Rank Events |
||||||||||
| Other Quest Categories | |||||||||||
| Arch-Tempered Quests | Collaboration Quests | Gold Crown Quests | |||||||||
| Arena Quests | Challenge Quests | Investigation Quests | |||||||||
| How to Unlock All Quests | |||||||||||
| Low/High Rank | Master Rank | ||||||||||
One Helluva Sinus Infection Quest and Rewards
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