Monster Hunter World (MHW)

A Rotten Thing To Do Quest and Rewards

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This is a guide for A Rotten Thing To Do, a Quest appearing in Monster Hunter World (MHW). Learn about A Rotten Thing To Do's availability, unlock conditions, target Monsters, and rewards for completing the Quest here.

A Rotten Thing To Do Basic Information

How to Unlock A Rotten Thing To Do

Complete the quest "Radobaan Roadblock".

Quest Basic Information

Lv ★4 Destination Rotten Vale
Type  Optional Research Points  250
Time Limit  50 minutes Reward Money 3240z
Objective Hunt a Great Girros
Other Conditions  HR8

All Low Rank Optional Quests

Monsters Appearing in A Rotten Thing To Do

Name Starting Area Visited Areas Rest Spot
OdogaronOdogaron 10 1 / 2 / 3 / 4 / 6 / 7 / 8 / 9 / 12 / 14 / 16 13
Great GirrosGreat Girros 7 6 / 7 / 8 7
RadobaanRadobaan 1 1 / 2 / 3 / 4 2

Rotten Vale Maps and Materials

Monster Weaknesses

Monster Fire.png Water.png Thunder.png Ice.png Dragon.png
Odogaron ImageOdogaron ★★ ★★★
Great Girros ImageGreat Girros ★★ ★★★ ★★
Radobaan ImageRadobaan ★★ ★★★

A Rotten Thing To Do Rewards

Main Rewards

Item Appearance Rate
Warped Bone 13%
Armor Sphere+ 1%
Godbug 12%
Machalite Ore 10%
Monster Bone L 24%
Dragonite Ore 8%
Sturdy Bone 18%
Dragonfell Berry 14%

Monster Materials

Odogaron

Odogaron Sinew Odogaron Scale
Odogaron Claw Odogaron Fang
Odogaron Plate Odogaron Tail

Great Girros

Great Girros Hide Great Girros Hood
Great Girros Scale Great Girros Tail
Great Girros Fang

Radobaan

Radobaan Shell Radobaan Scale
Radobaan Oilshell Radobaan Marrow

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