Fire Emblem Heroes (FEH)

Mythic Hero Battle: Heimdallr Abyssal Guide and Recommended Team

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Last updated on: October 30, 2025 06:11 AM

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Mythic Hero Battle: Heimdallr Top Banner Fire Emblem Heroes FEH

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

Boss Unit for This Mythic Hero Battle
Heimdallr [9.5/10]

List of Contents

Strategy Overview
Strategy
Recommended Units
FEH Related Guides

Mythic Hero Battle: Heimdallr Strategy Overview

Featured Hero	Heimdallr
First Clear Reward	Abyssal: Gold Archer Bandana 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	10/30/2025 - 11/17/2025

Unit Placement

Abyssal	Infernal

Abyssal Enemy Information

A Heimdallr	HP 85	Atk 76	Spd 23		Def 39	Res 63
A Heimdallr	： Mystic Gjallarhorn ：- ： Ice Wall			： Atk/Res Aria ： An Open Book ： A/R Hone Assault ： Deflect Missile 3 ：-
B Axe Knight	HP 99	Atk 69	Spd 26		Def 65	Res 33
B Axe Knight	： Doubler Axe+ ：- ： Armored Blaze			： Atk/Def Bond 3 ： Slick Fighter 4 ： A/D Briar N Save ： Steady Breath ：-
C Bow Fighter	HP 96	Atk 64	Spd 49		Def 44	Res 29
C Bow Fighter	： Gainful Bow+ ：- ： Curved Shot			： Sly Swift Sparrow ： Spd/Def Tempo 3 ： Creation Pulse ： Kestrel Stance 2 ：-
D Blue Thief	HP 84	Atk 59	Spd 60		Def 30	Res 51
D Blue Thief	： Clever Dagger+ ：- ： Lethality			： Remote Sturdy ： Phys. Null Follow ： Canto Control 3 ： Distant Guard 3 ：-
E Red Manakete	HP 95	Atk 59	Spd 46		Def 49	Res 44
E Red Manakete	： Lightning Breath+ ：- ： Dragon's Roar			： Atk/Res Scowl 4 ： A/S Spiked Wall ： Atk/Res Oath 3 ： Distant Def 3 ：-
F Sword Cavalier	HP 89	Atk 63	Spd 37		Def 40	Res 42
F Sword Cavalier	： Hexblade Sword+ ：- ： Haze Slice			： Atk/Def Excel ： Momentum 4 ： Rouse Atk/Def 3 ： Deflect Magic 3 ：-

Abyssal Reinforcements

Turn 2 Reinforcements

Reinforcements 1 Sword Fighter	HP 95	Atk 69	Spd 54		Def 53	Res 39
Reinforcements 1 Sword Fighter	： Campaign Blade+ ：- ： Archrival			： Fury 3 ： Gambit 4 ： Brutal Tempest ： Fury 3 ：-
Reinforcements 1 Green Cavalier	HP 75	Atk 63	Spd 37		Def 27	Res 50
Reinforcements 1 Green Cavalier	： Gronnlantern+ ：- ： Frost Moon			： Sly Mirror ： Magic Gambit 4 ： Rouse Atk/Res 3 ： Savage Blow 3 ：-
Reinforcements 1 Lance Knight	HP 99	Atk 69	Spd 26		Def 65	Res 33
Reinforcements 1 Lance Knight	： Instant Lance+ ：- ： Armored Blaze			： Atk/Def Ideal 3 ： Assault Fighter ： Assault Rush ： Heavy Blade 3 ：-

Turn 3 Reinforcements

Reinforcements 2	HP 84	Atk 55	Spd 32		Def 40	Res 42
Reinforcements 2	： Brave Axe+ ：- ： No Quarter			： Blue Skies 4 ： Assault Force ： Ward Cavalry ： Atk/Def Clash 3 ：-
Reinforcements 2 Blue Cavalier	HP 77	Atk 69	Spd 37		Def 22	Res 55
Reinforcements 2 Blue Cavalier	： Blárcrab+ ：- ： Iceberg			： Still Water 3 ： Spd/Res Shackle ： Def/Res Smoke 3 ： Mystic Boost 3 ：-
Reinforcements 2 Sword Fighter	HP 95	Atk 61	Spd 51		Def 47	Res 33
Reinforcements 2 Sword Fighter	： Null Blade+ ：- ： Haze Slice			： Atk/Spd Clash 3 ： Wings of Mercy 4 ： Brutal Tempest ： Atk/Spd Clash 3 ：-

Turn 4 Reinforcements

Reinforcements 3 Lance Cavalier	HP 89	Atk 69	Spd 48		Def 32	Res 34
Reinforcements 3 Lance Cavalier	： Hexblade Lance+ ：- ： Glimmer			： Verge of Death ： Pass 3 ： Incite Atk/Spd ： Panic Ploy 3 ：-
Reinforcements 3 Bow Flier	HP 81	Atk 64	Spd 54		Def 29	Res 42
Reinforcements 3 Bow Flier	： Halting Bow+ ：- ： Moonbow			： Sly Swift Sparrow ： Arc-Fort Breath ： Atk/Spd Rein 3 ： Iote's Shield ：-

Infernal Enemy Information

A Heimdallr	HP 67	Atk 68	Spd 17		Def 32	Res 54
A Heimdallr	： Mystic Gjallarhorn ：- ： Ice Wall			： Atk/Res Aria ： An Open Book ： A/R Hone Assault ：- ：-
B Axe Knight	HP 81	Atk 65	Spd 23		Def 60	Res 31
B Axe Knight	： Doubler Axe+ ：- ： Armored Blaze			： Atk/Def Bond 3 ： Slick Fighter 4 ： A/D Briar N Save ：- ：-
C Bow Fighter	HP 78	Atk 60	Spd 45		Def 40	Res 27
C Bow Fighter	： Gainful Bow+ ：- ： Curved Shot			： Sly Swift Sparrow ： Spd/Def Tempo 3 ： Creation Pulse ：- ：-
D Blue Thief	HP 63	Atk 55	Spd 55		Def 27	Res 47
D Blue Thief	： Clever Dagger+ ：- ： Lethality			： Remote Sturdy ： Phys. Null Follow ： Canto Control 3 ：- ：-
E Red Manakete	HP 76	Atk 55	Spd 42		Def 45	Res 40
E Red Manakete	： Lightning Breath+ ：- ： Dragon's Roar			： Atk/Res Scowl 4 ： A/S Spiked Wall ： Atk/Res Oath 3 ：- ：-
F Sword Cavalier	HP 68	Atk 59	Spd 34		Def 36	Res 38
F Sword Cavalier	： Hexblade Sword+ ：- ： Haze Slice			： Atk/Def Excel ： Momentum 4 ： Rouse Atk/Def 3 ：- ：-

Infernal Reinforcements

Turn 2 Reinforcements

Reinforcements 1 Sword Fighter	HP 76	Atk 62	Spd 47		Def 46	Res 34
Reinforcements 1 Sword Fighter	： Campaign Blade+ ：- ： Archrival			： Fury 3 ： Gambit 4 ： Brutal Tempest ：- ：-
Reinforcements 1 Green Cavalier	HP 56	Atk 60	Spd 34		Def 24	Res 43
Reinforcements 1 Green Cavalier	： Gronnlantern+ ：- ： Frost Moon			： Sly Mirror ： Magic Gambit 4 ： Rouse Atk/Res 3 ：- ：-
Reinforcements 1 Lance Knight	HP 81	Atk 65	Spd 23		Def 60	Res 31
Reinforcements 1 Lance Knight	： Instant Lance+ ：- ： Armored Blaze			： Atk/Def Ideal 3 ： Assault Fighter ： Assault Rush ：- ：-

Turn 3 Reinforcements

Reinforcements 2	HP 63	Atk 51	Spd 29		Def 36	Res 38
Reinforcements 2	： Brave Axe+ ：- ： No Quarter			： Blue Skies 4 ： Assault Force ： Ward Cavalry ：- ：-
Reinforcements 2 Blue Cavalier	HP 56	Atk 65	Spd 34		Def 19	Res 48
Reinforcements 2 Blue Cavalier	： Blárcrab+ ：- ： Iceberg			： Still Water 3 ： Spd/Res Shackle ： Def/Res Smoke 3 ：- ：-
Reinforcements 2 Sword Fighter	HP 76	Atk 57	Spd 47		Def 43	Res 31
Reinforcements 2 Sword Fighter	： Null Blade+ ：- ： Haze Slice			： Atk/Spd Clash 3 ： Wings of Mercy 4 ： Brutal Tempest ：- ：-

Turn 4 Reinforcements

Reinforcements 3 Lance Cavalier	HP 68	Atk 65	Spd 45		Def 28	Res 30
Reinforcements 3 Lance Cavalier	： Hexblade Lance+ ：- ： Glimmer			： Verge of Death ： Pass 3 ： Incite Atk/Spd ：- ：-
Reinforcements 3 Bow Flier	HP 60	Atk 60	Spd 50		Def 27	Res 38
Reinforcements 3 Bow Flier	： Halting Bow+ ：- ： Moonbow			： Sly Swift Sparrow ： Arc-Fort Breath ： Atk/Spd Rein 3 ：- ：-

Damage Calculator Tool

Mythic Hero Battle: Heimdallr Strategy

Use Savior units to tank the enemies

A player phase is unlikely to work due to 【Foresight Snare】 forcefully ending the turn of your first attacker. The Axe Knight covering the team with Near Save and being the recipient of 【Foresight Snare】 makes attacking into the enemies quite difficult.

Instead, we recommend using Savior Tanks to win this map on Enemy Phase and preparing accordingly.

Using an enemy phase strategy completely ignores 【Foresight Snare】, making An Open Book the only powerful skill you need to prepare for.

Bring a Near Save tank, a Far Save tank, and two supports. If you have heroes that can cleanse debuffs, use them as your support units. If not, bring along a healer and a refresher unit.

First and foremost, ensure that your Far Save tank has high Res and can survive combat against Heimdallr. The tank does not need to defeat her in combat in one round, but survival is necessary.

Move your ball formation forward and bait a small group of enemies in, and wait for the enemies to engage. Take them down one at a time, and use subsequent turns to heal your tanks. Keep all your units protected by the Savior Tanks at all times, and win this map through attrition.

Recommended Units for Mythic Hero Battle: Heimdallr

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

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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Mythic Hero Battle: Heimdallr Abyssal Guide and Recommended Team

Mythic Hero Battle: Heimdallr 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

Mythic Hero Battle: Heimdallr Strategy

Use Savior units to tank the enemies

Recommended Units for Mythic Hero Battle: Heimdallr

Tank Units

Support Units

Refresher Units

FEH Related Guides

Mythic Hero Battle Walkthroughs

List of Mythic Hero Battles

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