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

Chulainn Strategy Overview

Obtainable Unit	Chulainn
Recommended Level	Lv.40
Difficulty	Infernal Lunatic Hard
Conditions	Condition 1: All 4 units must survive. Condition 2: You cannot use Light's Blessing
Dates Active	01/07/2025 - 01/14/2025

Initial Unit Placement

Infernal	Lunatic

Infernal Enemy Information

A Green Bow (Enemy)		HP 78		Atk 63		Spd 46		Def 43		Res 33
		： Halting Bow+ ： Rally Atk/Spd ： Deadeye					： Fury 3 ： Spd/Def Ruse 4 ： Infantry Pulse 4 ：- ：-
B Red Mage		HP 61		Atk 59		Spd 47		Def 28		Res 39
		： Rauðrfox+ ：- ： Glimmer					： Remote Sparrow ： Spd/Res Tempo 4 ： Close Guard 3 ：- ：-
C Chulainn		HP 82		Atk 65		Spd 51		Def 48		Res 23
		： Campaign Blade+ ：- ： Luna					： Firestorm Boost 3 ： A/D Bulwark 4 ： Endless Tempest ：- ：-
D Blue Mage		HP 61		Atk 57		Spd 45		Def 37		Res 45
		： Blárdeer+ ：- ： Glacies					： Fort. Def/Res 3 ： Magic Gambit 4 ： Time's Pulse 3 ：- ：-
E Axe Fighter		HP 76		Atk 57		Spd 47		Def 43		Res 31
		： Spirited Axe+ ：- ： No Quarter					： D Bonus Doubler ： Spd/Def Tempo 3 ： Atk/Spd Oath 4 ：- ：-
F Lance Knight		HP 81		Atk 67		Spd 23		Def 56		Res 31
		： Stout Lance+ ： Draw Back ： Armored Beacon					： Distant Foil ： Slick Fighter 4 ： A/D Far Save 3 ：- ：-

Lunatic Enemy Information

A Green Bow (Enemy)		HP 55		Atk 50		Spd 34		Def 34		Res 22
		： Halting Bow+ ： Rally Atk/Spd ： Deadeye					： Fury 3 ： Spd/Def Ruse 3 ： Infantry Pulse 3 ：- ：-
B Chulainn		HP 73		Atk 60		Spd 46		Def 44		Res 21
		： Campaign Blade+ ：- ： Luna					： Firestorm Boost 3 ： A/D Bulwark 4 ： Endless Tempest ：- ：-
C Blue Mage		HP 44		Atk 43		Spd 35		Def 24		Res 34
		： Blárdeer+ ：- ： Glacies					： Fort. Def/Res 2 ： Magic Gambit 3 ： Time's Pulse 3 ：- ：-
D Axe Fighter		HP 55		Atk 47		Spd 34		Def 33		Res 22
		： Spirited Axe+ ：- ： No Quarter					： Distant Counter ： Spd/Def Tempo 3 ： Atk/Spd Oath 3 ：- ：-
E Lance Knight		HP 66		Atk 54		Spd 16		Def 43		Res 19
		： Stout Lance+ ： Draw Back ： Armored Beacon					： Distant Foil ： Slick Fighter 3 ： A/D Far Save 3 ：- ：-

Chulainn Strategy

Use a Player Phase Strategy

This map has no refresher units and the enemies are grouped up in one area, making it a perfect map for both Hit and Run and/or Galeforce strategies.

The enemies will not advance on the first turn, giving you time to set up your units until you're ready to begin.

To start, defeat either the Lance Knight or the Axe Fighter depending on whether your initiator unit is melee or ranged. The Lance Knight has A/D Far Save 3, but his low Res is easily exploitable and you can burst him down with strong magical nukes. The Axe Fighter has D Bonus Doubler which combos well with his Atk/Spd Oath 4. However, if you can attack him on the first turn, he won't have his visible bonuses ready, making him easier to defeat.

After the first foe has fallen, either retreat to safety if using a Hit and Run strategy, or continue attacking the enemies if using a Galeforce strategy.

For the Hit and Run strategy, allow the opponents to approach your units and pick them off one by one, retreating to safety after picking off 1-2 enemies. Repeat until the map is over.

For the Galeforce strategy, continue attacking until your beacon unit is in Wings of Mercy range, and then warp in with the rest of your units to clear the map.

Chulainn himself is the strongest enemy on this map, but his low Res and lack of Res-boosting skills leave him vulnerable to magic damage. Keep his A/D Bulwark 4 in mind as it can prevent your units from getting past him, forcing you to deal with him first before you can sweep the rest of the enemies.

Tank Strategies are also viable

Tank strategies are also viable on this map as there are no enemy units that are too threatening. Even Chulainn himself won't be able to dent your tank unit as long as you have adequate support around your tank.

With the pillars on the left and right side of the map, all the enemies will be funneled into the center area. No enemies have any area-of-effect Specials or any way to get past the frontline, making it an ideal situation for your frontline tank and back row support(s).

Simply place your tank unit in front of the enemies and the support unit(s) behind him/her and watch as the enemies march forward to their doom.

Best Units for Chulainn

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.
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.
Fallen Chrom	Sword Cavalry Arcane Devourer grants bonus Special charges and Special cooldown acceleration, allowing an easy Galeforce trigger. Fate Unchanged... allows repositioning an ally to safety and using the extra action for Fallen Chrom to retreat to safety himself.
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

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Lyon: Shadow Prince	Oliver: Admirer of Beauty
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