Rumble in the Underground Walkthrough | Digimon Story Time Stranger

7/22/2025
Walkthrough Guide

This is a walkthrough for the Rumble in the Underground mission in Digimon Story Time Stranger. Read on to see how to complete all of its objectives and how to beat Fugamon, Ogremon, and Hyogamon!

| ## Rumble in the Underground Walkthrough

Rumble in the Underground Guide
1Follow Lunamon to Hagurumon After talking to Lunamon, follow it to a fence where Hagurumon is. Talk to Hagurumon.
2Pass Through Fence Pass through the hole in the fence and go to the open vent to the right, where you will talk to Lunamon.After the cutscene with Lunamon, enter the vent. Alternatively, you may first visit the In-Between Theater at the back.
3Find Little Bearmon In Central Town: Spiral Waterway, follow the path until you reach the stairs where Little Bearmon is.
4Descend Waterway Proceed to the location of the objective marker. You will have to keep descending the waterway to eventually reach the objective at the lowest level. Fight hostile Digimon in your way.
5Destroy Debris to Access In-Between Theater At the lowest level of the waterway, you will see the rift to the In-Between Theater covered in debris. You may access the In-Between Theater first to stock up on items before the boss fight ahead.
6Fight Fugamon, Ogremon, and Hyogamon To the right of the rift to the In-Between Theater, you will enter an area with Fugamon, Ogremon, and Hyogamon standing on a platform. Defeat them to end the mission.▶︎ How to Beat Fugamon, Ogremon, and Hyogamon

Rumble in the Underground Boss Guides

How to Beat Fugamon, Ogremon, and Hyogamon

Defeat Fugamon First

Prioritize beating Fugamon first as it has the least number of HP of the three. Later, focus on defeating Hyogamon next and then Ogremon last.

Use Digimon That Target All Weaknesses

Boss

Attribute Weakness

Elemental Weakness

  • Fugamon Boss Fugamon

  • Vaccine

  • Water, Ice

  • Ogremon Boss Ogremon

  • Fire, Earth

  • Hyogamon Boss Hyogamon

  • Fire, Steel

Three of the bosses have their own elemental weaknesses but are mutually weak to Vaccine Digimon. Try to assemble a team of Vaccine Digimon that targets all their elemental weaknesses.

Use Cross Arts to Defeat Bosses Faster

Because there are three bosses, equip offensive Cross Arts like Cross Art: Strike. Otherwise, you may use Cross Arts that buff your team's damage, like Cross Art: Field.

Use Aegiomon's Stun Beat Blow Skill

Halfway through the battle, Aegiomon will learn the Stun Beat Blow skill. Capitalize on this skill to deal immense damage to the bosses while applying the Paralysis effect.

How to Beat Fugamon, Ogremon, and Hyogamon

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