Fire Emblem Heroes (FEH)

Duo and Mythic Hero Battle: Marth & Elm Abyssal Guide and Recommended Team

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Last updated on: September 3, 2025 07:16 AM

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Marth & Elm Duo & Mythic Battle Banner Fire Emblem Heroes FEH

This is a guide to clearing the Infernal and Abyssal maps for Duo and Mythic Hero Battle: Marth & Elm in Fire Emblem Heroes (FEH). To see strategy for defeating Duo and Mythic Hero Battle: Marth & Elm, enemy information, as well as the best units and party to use, read on!

Boss Units for This Duo & Mythic Hero Battle
Anniversary Marth [9.5/10] Elm [9.9/10]

Table of Contents

Strategy Overview
Unit Placement
Abyssal Enemy Information
Infernal Enemy Information
Strategy
Recommended Units
Abyssal Strategy Example
User Submitted Parties
Related Guides

Duo & Mythic Hero Battle: Marth & Elm Strategy Overview

Featured Hero	Anniversary Marth Elm
First Clear Reward	Abyssal:Gold Renewal Charm Infernal: x4 Lunatic: ×3 Hard: ×2 Normal: x1
Recommended Level	Lv.40
Difficulty	Abyssal Infernal Lunatic Hard
Conditions	Condition 1: All units must survive Condition 2: Cannot use Light's Blessing
Dates Active	04/28/2025 - 05/12/2025

Unit Placement

Abyssal	Infernal

Abyssal Enemy Information

A Anniversary Marth	HP 80	Atk 73	Spd 62		Def 47	Res 34
A Anniversary Marth	： Sword of Peace ：- ： The Fire Emblem			： Blue Skies 4 ： Shield of Hope ： S/D Hold Guide ： Atk/Spd Clash 3 ：-
B Troubadour	HP 71	Atk 58	Spd 32		Def 30	Res 56
B Troubadour	： Flash+ ： Magic Shield+ ： Holy Pressure			： Sway Atk/Res ： Called to Serve ： Distant Guard 3 ： Drive Res 2 ：-
C Lance Fighter	HP 95	Atk 62	Spd 48		Def 47	Res 33
C Lance Fighter	： Doubler Lance+ ：- ： Miracle			： Atk/Spd Unity ： Gambit 4 ： Canto Control 3 ： Null Follow-Up 3 ：-
D Axe Dragon	HP 89	Atk 70	Spd 43		Def 58	Res 33
D Axe Dragon	： Up-Front Axe+ ：- ： Haze Slice			： Fury 4 ： Wyvern Rift ： Atk/Def Rein 3 ： Deflect Missile 3 ：-
E Elm	HP 81	Atk 69	Spd 62		Def 43	Res 39
E Elm	： Jaws of Closure ：- ： Nimble Beast			： New Opening ： Bestial Agility ： Preempt Screech ： Iote's Shield ：-
F Blue Fáfnir	HP 87	Atk 62	Spd 51		Def 47	Res 42
F Blue Fáfnir	： Dark Breath+ ：- ： Draconic Aura			： Sly Swift Sparrow ： Edged Scales ： Goad Fliers ： Drive Atk 2 ：-

Abyssal Reinforcements

Turn 2 Reinforcements

Reinforcements 1 Thief	HP 84	Atk 59	Spd 60		Def 30	Res 51
Reinforcements 1 Thief	： Gainful Dagger+ ：- ： Moonbow			： Sly Swift Sparrow ： Lull Spd/Def 3 ： Active Lookout ： Bonus Doubler 3 ：-
Reinforcements 1 Blue Cavalier	HP 75	Atk 69	Spd 37		Def 22	Res 52
Reinforcements 1 Blue Cavalier	： Blárblade+ ：- ： Glimmer			： Still Water 3 ： A/R Far Resound ： Def/Res Ploy 3 ： Mystic Boost 3 ：-
Reinforcements 1 Green Bat	HP 78	Atk 60	Spd 61		Def 45	Res 28
Reinforcements 1 Green Bat	： Bat Fang ：- ： Fierce Beast			： Atk/Spd Fortune ： Speedtaker 4 ： Fatal Smoke 3 ： Swift Sparrow 2 ：-

Turn 3 Reinforcements

Reinforcements 2 Bow Flier	HP 79	Atk 67	Spd 59		Def 24	Res 37
Reinforcements 2 Bow Flier	： Firesweep Bow+ ：- ： Deadeye			： Life and Death 3 ： S/D Far Trace 4 ： Deadly Miasma ： Spd/Def Rein 3 ：-
Reinforcements 2 Axe Flier	HP 80	Atk 52	Spd 44		Def 32	Res 49
Reinforcements 2 Axe Flier	： Brave Axe+ ：- ： No Quarter			： Atk/Spd Clash 3 ： Flow Desperation ： Spd/Def Crux ： Pegasus Flight 3 ：-
Reinforcements 2 Axe Knight	HP 99	Atk 69	Spd 26		Def 65	Res 33
Reinforcements 2 Axe Knight	： Steadfast Axe+ ：- ： Armored Blaze			： Svalinn Shield ： Wily Fighter 4 ： A/D Twin N Save ： Shield Session 3 ：-

Turn 4 Reinforcements

Reinforcements 3 Lance Cavalier	HP 89	Atk 61	Spd 37		Def 44	Res 42
Reinforcements 3 Lance Cavalier	： Pursual Lance+ ：- ： Ruptured Sky			： Atk/Def Excel ： Momentum 4 ： Pulse Smoke 3 ： Atk/Def Clash 3 ：-
Reinforcements 3 Blue Manakete	HP 95	Atk 61	Spd 46		Def 45	Res 48
Reinforcements 3 Blue Manakete	： Water Breath+ ：- ： Dragon's Roar			： Mirror Stance 2 ： Laguz Friend 4 ： Barricade ： Distant Counter (D) ：-

Infernal Enemy Information

A Anniversary Marth	HP 64	Atk 65	Spd 53		Def 39	Res 28
A Anniversary Marth	： Sword of Peace ：- ： The Fire Emblem			： Blue Skies 4 ： Shield of Hope ： S/D Hold Guide ：- ：-
B Troubadour	HP 49	Atk 54	Spd 30		Def 28	Res 52
B Troubadour	： Flash+ ： Magic Shield+ ： Holy Pressure			： Sway Atk/Res ： Called to Serve ： Distant Guard 3 ：- ：-
C Lance Fighter	HP 76	Atk 59	Spd 44		Def 43	Res 31
C Lance Fighter	： Doubler Lance+ ：- ： Miracle			： Atk/Spd Unity ： Gambit 4 ： Canto Control 3 ：- ：-
D Axe Dragon	HP 68	Atk 66	Spd 39		Def 54	Res 31
D Axe Dragon	： Up-Front Axe+ ：- ： Haze Slice			： Fury 4 ： Wyvern Rift ： Atk/Def Rein 3 ：- ：-
E Elm	HP 66	Atk 61	Spd 53		Def 36	Res 33
E Elm	： Jaws of Closure ：- ： Nimble Beast			： New Opening ： Bestial Agility ： Preempt Screech ：- ：-
F Blue Fáfnir	HP 66	Atk 58	Spd 47		Def 43	Res 38
F Blue Fáfnir	： Dark Breath+ ：- ： Draconic Aura			： Sly Swift Sparrow ： Edged Scales ： Goad Fliers ：- ：-

Infernal Reinforcements

Turn 2 Reinforcements

Reinforcements 1 Thief	HP 63	Atk 55	Spd 55		Def 27	Res 47
Reinforcements 1 Thief	： Gainful Dagger+ ：- ： Moonbow			： Sly Swift Sparrow ： Lull Spd/Def 3 ： Active Lookout ：- ：-
Reinforcements 1 Blue Cavalier	HP 54	Atk 65	Spd 34		Def 19	Res 48
Reinforcements 1 Blue Cavalier	： Blárblade+ ：- ： Glimmer			： Still Water 3 ： A/R Far Resound ： Def/Res Ploy 3 ：- ：-
Reinforcements 1 Green Bat	HP 57	Atk 56	Spd 57		Def 41	Res 25
Reinforcements 1 Green Bat	： Bat Fang ：- ： Fierce Beast			： Atk/Spd Fortune ： Speedtaker 4 ： Fatal Smoke 3 ：- ：-

Turn 3 Reinforcements

Reinforcements 2 Bow Flier	HP 58	Atk 63	Spd 55		Def 22	Res 33
Reinforcements 2 Bow Flier	： Firesweep Bow+ ：- ： Deadeye			： Life and Death 3 ： S/D Far Trace 4 ： Deadly Miasma ：- ：-
Reinforcements 2 Axe Flier	HP 59	Atk 48	Spd 40		Def 30	Res 45
Reinforcements 2 Axe Flier	： Brave Axe+ ：- ： No Quarter			： Atk/Spd Clash 3 ： Flow Desperation ： Spd/Def Crux ：- ：-
Reinforcements 2 Axe Knight	HP 81	Atk 65	Spd 23		Def 60	Res 31
Reinforcements 2 Axe Knight	： Steadfast Axe+ ：- ： Armored Blaze			： Svalinn Shield ： Wily Fighter 4 ： A/D Twin N Save ：- ：-

Turn 4 Reinforcements

Reinforcements 3 Lance Cavalier	HP 68	Atk 57	Spd 34		Def 40	Res 38
Reinforcements 3 Lance Cavalier	： Pursual Lance+ ：- ： Ruptured Sky			： Atk/Def Excel ： Momentum 4 ： Pulse Smoke 3 ：- ：-
Reinforcements 3 Blue Manakete	HP 76	Atk 57	Spd 42		Def 41	Res 44
Reinforcements 3 Blue Manakete	： Water Breath+ ：- ： Dragon's Roar			： Mirror Stance 2 ： Laguz Friend 4 ： Barricade ：- ：-

Damage Calculator Tool

Duo & Mythic Hero Battle: Marth & Elm Strategy

Use a Hit and Run team composition!

Using a Hit and Run strategy is the best option for this map due to the open space near the starting area providing enough room to maneuver around the enemies.

The generic enemies will advance on the first turn even if you do not step in the danger area. Elm will begin advancing on turn 2, and Anniversary Marth will begin advancing on turn 3.

Bring units that generate multiple actions when on the offensive, such as Emblem Sigurd, Brave Felix, and Valentine's Edelgard.

Use the first turn to position your offensive units forward without stepping into the danger area. Wait for the enemies to advance and leave themselves vulnerable.

On the second turn, defeat as many enemies as you can while staying out of the danger area.

On the third turn, repeat the same process, except prioritize defeating Elm when you can. He does not have a Distant Counter effect, thus attacking him with ranged units is ideal. Alternatively, you can apply splash damage from area-of-effect Specials to reduce his HP, then defeat him in one hit even through his true damage reduction effects.

Repeat the Hit and Run strategy until the enemies are defeated. You may notice Anniversary Marth's Vantage effect may render you unable to defeat him in combat. Do not worry; the Vantage effect and all the other effects of Shield of Hope are reliant on having an ally within 3 spaces. Simply isolate Anniversary Marth from his allies or leave him as the last unit remaining, and then you can safely defeat him afterwards.

A Tanking Strategy is also possible!

It is also possible to form up into a ball and use Savior Tanks to enemy phase the entire map if you have a modern Near Save tank from recent releases.

However, you will need to bring a unit whose role is to specifically defeat Elm and then retreat to the safety of your Save Ball. Elm's Jaws of Closure will ignore your Savior skills and even apply the 【Undefended】 status after he acts. You must reach him as soon as possible and defeat him immediately.

Elm will advance on turn two, so you will need to put the tank units in front to avoid having your supports getting attacked by the enemy units.

Once Elm is in range, send in your designated unit, and then return to the safety of the Save Ball.

Bring ample support for your Savior tanks and allow the enemies to approach and attack into your units.

Recommended Units for Duo & Mythic Hero Battle: Marth & Elm

Player Phase Units

Unit Name
Emblem Sigurd	Lance Cavalry Holy-War Spear grants Emblem Sigurd +2 movement (5 total), 【Canto (3)】, and bonus true damage. Override is an area-of-effect Special that grants an extra action after use.
Brave Felix	Sword Infantry New Levin Sword accelerates Special by 2, opening up either area-of-effect spam or quick Galeforce. Lone Wolf can grant up to three actions in one turn.
Valentine's Edelgard	Axe Armored Eagle's Heart has built-in Canto and grants Edelgard an extra action and bonus true damage. Pure Storm grants an extra action, debuffs enemies, and grants Edelgard bonus true damage. Inheriting Galeforce can grant a fourth action per turn, but will reduce firepower due to the lack of Armored Blaze.
Winter Edelgard	Lance Armored Black Yule Lance creates 【Divine Vein (Flame)】 tiles, grants Special cooldown charges pre-combat, and cuts the effectiveness of enemy damage reduction skills. Raging Tempest grants mobility and one additional action after combat. Inheriting Galeforce can grant a third action per turn.
Summer Edelgard	Sword Armored Regal Sunshade's brave effect can quickly eliminate enemies. Raging Storm can grant one additional action after combat. Inheriting Galeforce can grant a third action per turn.
Bridal Sharena	Lance Cavalry Incredibly mobile with United Bouquet granting movement+1 and Forever Yours granting 【Canto (Dist, +1; Max 4)】. Both Forever Yours and Duo Skill generate additional actions while refreshing Canto.
Summer Gullveig	Red Tome Cavalry Can act up to four times in one turn with Golden Sunlight, Time and Light, and her Duo Skill. Flared Sparrow leaves behind 【Divine Vein (Flame)】 terrain, softening up enemies for future engagements.
Ninja Lucina	Colorless Bow Cavalry Great nuking power with Ylisse Ninja Bow dealing up to +25 true damage. Future Focus is a Swap that also grants 【Future Witness】 and 【Null Follow-Up】 to multiple allies upon use. Duo Skill grants another action post-combat and refreshes Canto.
Ninja Sanaki	Red Tome Cavalry Great nuking power with Radiant Scrolls. Flared Mirror creates Divine Veins that hinder movement for enemy ranged units and deal pre-combat damage to foes when they enter combat. Duo Skill grants another action post-combat.
Ninja Corrin (F)	Green Tome Cavalry Ninjutsu Scrolls' brave effect can quickly defeat enemies. Duo Skill grants herself an additional action.
Brave Chrom	Lance Cavalry Geirdriful grants bonus Special charges and Special cooldown acceleration, allowing an easy Galeforce trigger. A Fate Changed! allows repositioning an ally to safety and using the extra action for Brave Chrom to retreat to safety himself.
Gullveig	Colorless Tome Cavalry Quietus Gullveig and Time is Light grant herself additional actions after combat. Flared Sparrow leaves behind 【Divine Vein (Flame)】 terrain, softening up enemies for future engagements.
Reginn	Sword Cavalry Lyngheiðr grants Canto for mobility. Seiðr Shell+ is pre-charged and can defeat an enemy quickly.

Tank Units

Unit Name
Emblem Ike	Sword Infantry Emblem Ragnell neutralizes multiple penalties that affect his combat. Laguz Friend 4 provides strong damage reduction. Great Aether provides extra damage reduction and sustain to keep him healthy throughout multiple combats.
Ice Tribe Fjorm	Lance Armored Ice-Crystal Spear provides multiple defensive effects and a Null C-Disrupt effect. Dual Ice Mirrors and Shield Fighter work together to heavily mitigate damage from multiple ranged attacks and then reflect the damage back onto the enemy.
Attuned Hector	Sword Armored Fellowship Blade grants 【Bulwark】 to protect allies and grants Hector bonus true damage and true damage reduction. Oath of Ostia applies 【Divine Vein (Stone)】 and grants Hector Special skipping and damage reduction piercing. D Counter Echo allows counterattacks against ranged foes.
Brave Corrin (F)	Colorless Breath Armored Multiple damage reduction effects and the 【Divine Vein (Stone)】 effect paired with high Spd allow her to survive multiple engagements.
Marni	Axe Armored A free-to-play unit available using Heroic Grails with a statline heavily focused on tanking. Praise-Piner Axe neutralizes foe's bonuses, grants damage reduction, and has post-combat healing to loop her built-in Miracle effect over and over again.
Brave Edelgard	Axe Armored High mobility for an armored unit. Incredibly sturdy with refined Flower Hauteclere and Black Eagle Rule granting multiple defensive effects.

Support Units

Unit Name
Elimine	Staff Flying Grants damage reduction, healing, and can shut down "At start of turn" effects of foes in cardinal directions upon winning a Res check.
Halloween Flayn	Staff Cavalry Kitty-Cat Parasol grants Special cooldown charges, 30% damage reduction, and "neutralizes foe's bonuses to Atk" to nearby allies and can double as an offensive unit with high Atk and a guaranteed follow-up attack.
Seteth	Lance Flying Refined Spear of Assal grants Seteth and nearby allies bonus stats, true damage, true damage reduction, and neutralizes foe's bonuses.
Summer Hilda	Staff Flying Grants Atk+6 and Special acceleration to nearby allies during combat.

Refresher Units

Unit Name
New Year Peony	Green Tome Flying Grants additional Atk to allies in similar cardinal directions. Can use her Duo Skill to grant another action to an adjacent ally.
Peony	Blue Tome Flying Grants additional Atk and Spd to allies in similar cardinal directions.
Legendary Azura	Blue Tome Flying Grants additional bonuses equal to highest bonus on unit and +1 movement.
Hatari Azura	Green Tome Cavalry Grants +6 to all stats and +1 movement to target unit and all adjacent allies. Can use Harmonized Skill to grant extra actions to allies.

List of All Dancers | Heroes with Refresher Skills

Duo & Mythic Hero Battle: Marth & Elm Abyssal Strategy Example

Currently Unavailable!

An Abyssal strategy example for Duo & Mythic Hero Battle: Anniversary Marth & Elm is currently unavailable. Stay tuned!

User Submitted Parties for Duo & Mythic Hero Battle: Marth & Elm

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Abyssal Maps Infernal Fire Emblem Heroes FEH.png

Let us know about your party and how you cleared the maps in the comments below, via a picture of your team and their skills.

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FEH Related Guides

Mythic Hero Battle Walkthroughs

Mythic Hero Battle Walkthroughs and Schedule

List of Mythic Hero Battles

All Mythic Hero Battles
Heimdallr: God of Foresight
Baldr and Höðr	Anniversary Marth and Elm
Legendary Ayra and Mythic Athos	Læraðr and Níðhöggr
Hræsvelgr: Quieting Blade	Heiðrún and Eikþyrnir
Loki: Trickster God	Emblem Marth and Mythic Lumera
Gullveig and Kvasir	Veyle: Gentle Dragon
Freyr: Dream-King	Nerþuz: God of the Land
Fomortiis and Gotoh	Veronica and Embla
Arval: Cycle Keeper	Askr: God of Openness
Medeus: Earth-Dragon King	Elimine: Scouring Saint
Thórr and Eitri	Ótr: Kingsbrother
Ullr: The Bowmaster	Ashera: Order Goddess
Dagr: Sun's Radiance	Seiros: Saint of Legend
Freyja and Triandra	Plumeria: Lewd Dream
Hel: Death Sovereign	Mila: Goddess of Love
Bramimond: the Enigma	Líf: Lethal Swordsman
Thrasir: Omnicidal Witch	Altina: Dawn's Trueblade
Sothis: Girl on the Throne	Naga: Dragon Divinity
Yune: Chaos Goddess	Duma: God of Strength

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Duo and Mythic Hero Battle: Marth & Elm Abyssal Guide and Recommended Team

Duo & Mythic Hero Battle: Marth & Elm Strategy Overview

Unit Placement

Abyssal Enemy Information

Abyssal Reinforcements

Turn 2 Reinforcements

Turn 3 Reinforcements

Turn 4 Reinforcements

Infernal Enemy Information

Infernal Reinforcements

Turn 2 Reinforcements

Turn 3 Reinforcements

Turn 4 Reinforcements

Duo & Mythic Hero Battle: Marth & Elm Strategy

Use a Hit and Run team composition!

A Tanking Strategy is also possible!

Recommended Units for Duo & Mythic Hero Battle: Marth & Elm

Player Phase Units

Tank Units

Support Units

Refresher Units

Duo & Mythic Hero Battle: Marth & Elm Abyssal Strategy Example

Currently Unavailable!

User Submitted Parties for Duo & Mythic Hero Battle: Marth & Elm

We are looking for user submitted clears!

FEH Related Guides

Mythic Hero Battle Walkthroughs

List of Mythic Hero Battles

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