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

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

Mythic Hero Battle: Askr Strategy Overview

Featured Hero	Askr
First Clear Reward	Abyssal: Gold Forest Friends 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	07/26/2022 - 08/08/2022

Unit Placement

Abyssal	Infernal

Abyssal Enemy Information

A Askr		HP 80		Atk 69		Spd 35		Def 55		Res 40
		： Illuminating Horn ：- ： Bonfire					： Atk/Def Ideal 4 ： Atk/Def Bulwark 3 ： Opened Domain ： Mystic Boost 3 ：-
B Legendary Marth		HP 83		Atk 61		Spd 50		Def 42		Res 30
		： Exalted Falchion ：- ： Shining Emblem					： Atk/Spd Bond 4 ： Binding Shield II ： Even Tempest 3 ： Darting Breath ：-
C Green Flier		HP 72		Atk 53		Spd 49		Def 26		Res 42
		： Gronnfox+ ：- ： Glimmer					： Fury 4 ： A/R Far Trace 3 ： Atk/Res Rein 3 ：- ：-
D Red Mage		HP 73		Atk 54		Spd 42		Def 24		Res 36
		： Rauðrblade+ ：- ： Draconic Aura					： Atk/Spd Solo 4 ： Windsweep 3 ： C Feud 3 ： Phantom Spd 3 ：-
E Sword Fighter		HP 89		Atk 56		Spd 41		Def 39		Res 27
		： Instant Sword+ ：- ： Luna					： Swift Sparrow 2 ： Lull Spd/Def 3 ： Atk/Spd Oath 3 ：- ：-
F Lance Knight		HP 94		Atk 56		Spd 14		Def 51		Res 23
		： Brave Lance+ ： Pivot ： Bonfire					： Atk/Def Form 3 ： Bold Fighter 3 ： Panic Ploy 3 ： Chill Def 3 ：-

Abyssal Reinforcements

View Abyssal Enemy Reinforcements

Turn 2 Reinforcements

Reinforcements 1 Sword Cavalier		HP 82		Atk 57		Spd 29		Def 33		Res 35
		： Unbound Blade+ ： Rally Up Atk+ ： Escutcheon					： Distant Def 3 ： A/D Near Trace 3 ： Close Guard 3 ： Def Feint 3 ：-
Reinforcements 1 Axe Cavalier		HP 82		Atk 57		Spd 29		Def 33		Res 35
		： Slaying Axe+ ：- ： Moonbow					： Atk/Spd Catch 4 ： A/D Near Trace 3 ： Distant Guard 3 ：- ：-
Reinforcements 1 Blue Fáfnir		HP 83		Atk 52		Spd 44		Def 41		Res 39
		： Light Breath+ ：- ： Aegis					： Iote's Shield ： Chill Spd 3 ： Atk/Spd Rein 3 ： Swift Sparrow 2 ：-

Turn 3 Reinforcements

Reinforcements 2 Blue Bat		HP 75		Atk 56		Spd 57		Def 43		Res 28
		： Bat Fang ：- ： Moonbow					： Sturdy Impact ： Dive-Bomb 3 ： Ward Beasts ： Iote's Shield ：-
Reinforcements 2 Blue Thief		HP 77		Atk 55		Spd 49		Def 15		Res 46
		： Dragonslasher+ ：- ： Glimmer					： Still Water 3 ： Mystic Boost 3 ： Fatal Smoke 3 ：- ：-

Turn 4 Reinforcements

Reinforcements 3 Green Cavalier		HP 71		Atk 54		Spd 30		Def 23		Res 41
		： Gronnfox+ ：- ： Iceberg					： Mirror Strike 2 ： A/R Far Trace 3 ： Goad Cavalry ： Atk Ploy 3 ：-
Reinforcements 3 Green Mage		HP 75		Atk 53		Spd 42		Def 24		Res 39
		： Gronnserpent+ ： Reciprocal Aid ： Miracle					： Close Def 4 ： Guard 3 ： Breath of Life 3 ：- ：-

Infernal Enemy Information

A Askr		HP 64		Atk 61		Spd 29		Def 47		Res 34
		： Illuminating Horn ：- ： Bonfire					： Atk/Def Ideal 4 ： Atk/Def Bulwark 3 ： Opened Domain ：- ：-
B Legendary Marth		HP 67		Atk 53		Spd 42		Def 35		Res 23
		： Exalted Falchion ：- ： Shining Emblem					： Atk/Spd Bond 4 ： Binding Shield II ： Even Tempest 3 ：- ：-
C Green Flier		HP 48		Atk 50		Spd 45		Def 24		Res 39
		： Gronnfox+ ：- ： Glimmer					： Fury 4 ： A/R Far Trace 3 ： Atk/Res Rein 3 ：- ：-
D Red Mage		HP 52		Atk 50		Spd 38		Def 22		Res 33
		： Rauðrblade+ ：- ： Draconic Aura					： Atk/Spd Solo 4 ： Windsweep 3 ： C Feud 3 ：- ：-
E Sword Fighter		HP 68		Atk 52		Spd 37		Def 36		Res 24
		： Instant Sword+ ：- ： Luna					： Swift Sparrow 2 ： Lull Spd/Def 3 ： Atk/Spd Oath 3 ：- ：-
F Lance Knight		HP 76		Atk 52		Spd 12		Def 47		Res 21
		： Brave Lance+ ： Pivot ： Bonfire					： Atk/Def Form 3 ： Bold Fighter 3 ： Panic Ploy 3 ：- ：-

Infernal Reinforcements

View Infernal Enemy Reinforcements

Turn 2 Reinforcements

Reinforcements 1 Sword Cavalier		HP 62		Atk 53		Spd 27		Def 31		Res 33
		： Unbound Blade+ ： Rally Up Atk+ ： Escutcheon					： Distant Def 3 ： A/D Near Trace 3 ： Close Guard 3 ：- ：-
Reinforcements 1 Axe Cavalier		HP 62		Atk 53		Spd 27		Def 31		Res 33
		： Slaying Axe+ ：- ： Moonbow					： Atk/Spd Catch 4 ： A/D Near Trace 3 ： Distant Guard 3 ：- ：-
Reinforcements 1 Blue Fáfnir		HP 62		Atk 49		Spd 40		Def 37		Res 36
		： Light Breath+ ：- ： Aegis					： Iote's Shield ： Chill Spd 3 ： Atk/Spd Rein 3 ：- ：-

Turn 3 Reinforcements

Reinforcements 2 Blue Bat		HP 54		Atk 52		Spd 53		Def 39		Res 25
		： Bat Fang ：- ： Moonbow					： Sturdy Impact ： Dive-Bomb 3 ： Ward Beasts ：- ：-
Reinforcements 2 Blue Thief		HP 56		Atk 52		Spd 45		Def 13		Res 42
		： Dragonslasher+ ：- ： Glimmer					： Still Water 3 ： Mystic Boost 3 ： Fatal Smoke 3 ：- ：-

Turn 4 Reinforcements

Reinforcements 3 Green Cavalier		HP 47		Atk 50		Spd 28		Def 21		Res 37
		： Gronnfox+ ：- ： Iceberg					： Mirror Strike 2 ： A/R Far Trace 3 ： Goad Cavalry ：- ：-
Reinforcements 3 Green Mage		HP 54		Atk 49		Spd 38		Def 22		Res 36
		： Gronnserpent+ ： Reciprocal Aid ： Miracle					： Close Def 4 ： Guard 3 ： Breath of Life 3 ：- ：-

Damage Calculator Tool

Mythic Hero Battle: Askr Strategy

Use a Player Phase strategy with Galeforce and repeated actions

With six foes at the start of the match, it is possible to use a strategy involving repeated actions using Galeforce or Duo/Harmonized skills to clear the map on turn one, or eliminate most of the enemies and kite the remaining leftovers.

Units like Ninja Lyn, Ninja Corrin (F), and Summer Edelgard work fantastic in this map with their own abilities to generate additional actions. The Ninja duos can use their Duo Skills while Summer Edelgard can use Raging Storm to create an additional action for themselves. Summer Edelgard can even equip Galeforce to get a third action!

With proper setup, a team based on Wings of Mercy can also clear the map on turn one. Running recoil skills such as Fury 4 on your initiator can allow the rest of the team to warp in and clean house.

Key support units for this strategy include Hatari Azura and New Year Peony. These two refresher units can generate an additional action for an ally with their unique refresh skills, and another action on top of that with their own Duo/Harmonized skills too.

Use a Hit and Run strategy with Canto Units

Alternatively, you can opt for a Hit and Run strategy using units with post-combat movement, whether it's Canto effects or additional actions.

The units in the above strategy work for this one as well; simply retreat using their final actions after defeating some enemies.

Units like Scion Leif, Legendary Leif, and heroes with Galeforce also work for a Hit and Run strategy.

Heroes excelling at allowing your units to retreat include Valentine's Chrom, Legendary Chrom, and Legendary Lucina. Their unique Assist skills allow repositioning allies while retaining their actions

F2P options for this strategy include Reginn (obtained for free on Book 5, Chapter 1, Map 5) and Brave Eirika (if you chose her on the free summon for Choose Your Legends 5) as offensive units with Canto, and Peony as a refresher support capable of granting Formation/Orders buffs to her allies.

Watch out for Legendary Marth's Even Tempest 3!

Legendary Marth has Even Tempest 3 equipped. This allows him to obtain additional movement on even-numbered turns, which may surprise you and defeat an unsuspecting hero.

Keep this skill in mind during even-numbered turns and do not rely on the Danger Area.

Recommended Units for Mythic Hero Battle: Askr

Player Phase Units With Multiple Actions

Unit Name
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.
Legendary Edelgard	Axe Armored Raging Storm can grant one additional action after combat. Inheriting Galeforce can grant a third action per turn.
Ninja Corrin (F)	Green Tome Cavalry Ninjutsu Scrolls' brave effect can quickly defeat enemies. Duo Skill grants herself an additional action.
Ninja Lyn	Colorless Dagger Flying Tailwind Shuriken's brave effect can quickly defeat enemies. Duo Skill grants herself an additional action.
Brave Marianne	Colorless Tome Infantry Requiem Dance grants a nearby ally an additional action.

Hit and Run Strategy Units

Unit Name
Valentine's Chrom	Red Bow Infantry To Change Fate! allows a Reposition while retaining his own action.
Legendary Chrom	Blue Bow Infantry To Change Fate! allows a Reposition while retaining his own action.
Legendary Lucina	Blue Bow Infantry Future Vision II allows a Swap while retaining her own action.
Reginn	Sword Cavalry Canto 3 allows retreating post-combat. Seiðr Shell attacks the lower stat between Def and Res, which is important to avoid attacking into Askr's very high Def stat.
Brave Eirika	Lance Cavalry Canto 2 allows retreating post-combat. Moonlight Bangle deals damage based on foe's Def, which is perfect for defeating Askr.

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 Refresher-Assist Units

Mythic Hero Battle: Askr Abyssal Strategy Example

Currently Unavailable!

An Abyssal strategy example for Mythic Hero Battle: Askr is currently unavailable. Stay tuned!

User Submitted Parties for Mythic Hero Battle: Askr

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List of Mythic Hero Battles

All Mythic Hero Battles
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