Lichdragon FortissaxOptional boss encounter tied to Fia's questline and the Mending Rune of the Death-Prince storyline.
Lichdragon Fortissax is an optional Remembrance boss in Deeproot Depths, reached through Fia's quest. The battle combines dragon attacks with red lightning and Death blight hazards.
Role
Optional boss encounter tied to Fia's questline and the Mending Rune of the Death-Prince storyline.
Status
optional
Importance
supporting
Elden Ring · character art
01
Key takeaways
These are the decisions that matter before entering the .
01
The boss is optional
Lichdragon Fortissax is not required for the main-story ending route. Fight it for the Remembrance, the associated lore, and progression through Fia's questline rather than because the main path demands it.
02
Reach the arena through Fia
The battle begins from the connected to Fia in Deeproot Depths. If the dream option is unavailable, continue Fia's quest interactions and prerequisites instead of searching for a separate overworld entrance.
03
Treat red lightning as an area hazard
Several of Fortissax's signature attacks leave dangerous red-lightning effects or cover a broad section of the arena. Move away from the impact area before returning to attack; rolling only at the moment of impact is not enough if the effect remains active.
04
Do not stay under the dragon automatically
The body can shield the player from some frontal attacks, but the position is not universally safe. Watch the feet, wings, and camera, and disengage when the dragon shifts its weight or begins a lightning sequence.
05
The Remembrance offers a choice
The can be exchanged for one of its associated unique rewards through the normal Remembrance trade route. Decide whether the desired weapon or incantation fits the build before consuming or duplicating the Remembrance.
02
Lichdragon Fortissax overview
Spoilers
Story spoilers ahead. This section covers the character’s later arc and outcomes.
Lichdragon Fortissax is an optional dragon boss found in the Deeproot Depths during Fia's questline.
Lichdragon Fortissax is fought in the Deathbed Dream after the player reaches in the Deeproot Depths. The encounter is not part of the route required to finish the main story, but it is an important optional battle for players following the Age of Duskborn storyline and seeking the Remembrance of the Lichdragon. The boss arena is reached through Fia rather than by simply walking into a conventional fog gate, so players who have not advanced her quest can miss the encounter entirely until they return with the required quest progression.
The fight is built around a large dragon that controls space with sweeping physical attacks, airborne dives, red lightning, and Death blight-related effects. Fortissax's size makes the head a tempting target, but staying beneath or beside the body can expose the player to stomps, wing movements, lightning strikes, and lingering hazards. A successful strategy therefore depends less on standing at a fixed safe point and more on recognizing whether the current attack is a grounded body sweep, an aerial approach, or a lightning-area attack.
Fia's role is central to the encounter's context. After the player enters her dream, Lichdragon Fortissax appears as the guardian of the dying Godwyn's dream, connecting the battle to the spread of Death and the fate of Those Who Live in Death. Defeating the boss resolves the combat portion of this branch, while the wider questline can also lead to the . The boss itself is optional, but its reward and narrative placement make it one of the most consequential optional fights in Deeproot Depths.
The encounter matters to players making build and route decisions because it combines a Remembrance reward with a threat profile that punishes careless melee positioning. The safest plan is to preserve room around the dragon, avoid lingering in red-lightning effects, and punish recovery windows after committed attacks rather than chasing every opening. Players who want Fia's ending-related quest rewards should complete the relevant interactions before treating the area as finished, because defeating a boss does not by itself replace every remaining quest step.
03
Route to the encounter
Spoilers
Story spoilers ahead. This section covers the character’s later arc and outcomes.
Quest accessAdvance Fia's storyline
Arena accessEnter the Deathbed Dream
Boss fightDefeat Lichdragon Fortissax
1Reach Deeproot DepthsThe region is accessed through the underground progression routes.
2Complete the required Fia interactionsSpeak with Fia and satisfy the quest conditions that unlock her dream.
3Enter the Deathbed DreamUse the available interaction near Fia to begin the encounter.
●Defeat Lichdragon FortissaxThe reward is granted after the boss is defeated.
Fia's quest provides the route into the optional Deathbed Dream encounter.
04
Requirements and preparation
Spoilers
Story spoilers ahead. This section covers the character’s later arc and outcomes.
The main requirement is quest access rather than a mandatory character level or equipment item.
RequiredFia's quest progressionAdvance Fia's storyline far enough for the interaction to become available in Deeproot Depths.
RequiredAccess to Deeproot DepthsReach the underground region where Fia is located. The boss cannot be approached from the ordinary surface route.
RecommendedA plan for Death blight pressureUse your normal resistance, cleansing, spacing, or defensive options if your build struggles with Death-related hazards. Do not assume that ordinary healing alone will solve buildup or lingering area effects.
RecommendedA camera and targeting planLarge dragon bosses can obscure their feet, wings, and attack tells. Consider fighting unlocked when the camera begins hiding the body, then lock on again after creating distance.
OptionalA Remembrance decisionLeave room to choose between the rewards associated with Remembrance of the Lichdragon rather than spending it without checking the available exchange options.
05
Encounter phases and attack patterns
Spoilers
Story spoilers ahead. This section covers the character’s later arc and outcomes.
1
Opening ground phase
Starts: The fight begins when the player enters the Deathbed Dream and approaches the dragon.
Not specified; health varies with game cycle and multiplayer scaling.
Fortissax starts grounded and uses its body, wings, feet, head, and tail to control the arena. The player should circle at a manageable distance, identify the direction of each body movement, and attack after the dragon completes an animation rather than during its repositioning.
Grounded body and wing sweepsTell The dragon shifts its mass and rotates its body or wings before covering the space around it.Answer Roll through the active hit rather than away from the whole arena, then take one or two attacks during recovery. Leave immediately if the movement transitions into lightning.
Foot and stomp attacksTell A foot lifts or the body rises before striking the ground near the dragon.Answer Move toward a clear side or roll at impact. Do not remain beneath the lifted foot waiting for a head opening.
Bite and head swipesTell The head pulls back or turns toward the player before a short-range snap or sweep.Answer Roll toward the attack's inside line or retreat beyond the head, then punish only after the bite or swipe finishes.
Aerial repositioningTell Fortissax leaves the ground and changes the angle of approach.Answer Stop attacking and track the dragon rather than staring at the lock-on marker. Roll as the dive or landing attack reaches the player, then avoid the landing area.
The head is a valuable target when it is safely presented, but forcing head hits is riskier than attacking a limb or body after a completed sweep.
Keep enough open floor to retreat from red lightning. Fighting against the arena edge makes the dragon's size and camera problems much worse.
2
Lightning escalation
Starts: Fortissax begins chaining red-lightning attacks and overlapping area hazards as the battle continues.
Not specified; no exact phase threshold is supplied.
The later portion of the fight is defined by red lightning that can appear beside the dragon, travel through a target area, or persist briefly on the ground. Prioritize identifying the safe space and wait for the effect to end before resuming offense.
Red lightning weapon strikeTell A red lightning weapon forms or is raised before Fortissax directs the strike toward the player or nearby ground.Answer Create distance from the marked impact area and roll through the final contact if necessary. Return only after the lingering effect has cleared.
Lightning ground zonesTell Red sparks and electrical effects gather on the floor before a damaging area appears.Answer Move laterally out of the zone instead of rolling repeatedly in place. If several zones overlap, run toward the largest clear section of the arena.
Death lightning cloudTell A dark, charged cloud and red lightning signal a dangerous area around the attack.Answer Disengage immediately and do not trade damage inside the cloud. Re-enter from the side after the visual effect dissipates.
Flying lightning approachTell The dragon takes flight while lightning gathers around its body or landing path.Answer Track the descent, roll through the impact timing, and avoid the red-lightning residue left at the landing point.
The safest punish window is usually after an attack has fully resolved, not while Fortissax is still producing lightning.
If the camera loses the dragon during flight, unlock and use the arena and sound cues to orient yourself before attacking again.
06
Boss encounter strategy
Spoilers
Story spoilers ahead. This section covers the character’s later arc and outcomes.
Exact health is not included because it changes with game cycle and multiplayer scaling.
Begin by learning the dragon's movement rhythm rather than spending resources immediately. Stay near a flank or just outside the front of the body, watch the feet and wings for grounded attacks, and punish only after a sweep, bite, or stomp has ended. When Fortissax summons red lightning, stop attacking and move to clear ground; the lingering effect is the main reason that greedy melee trades fail. For ranged builds, maintain a medium distance that keeps the dragon visible while leaving space to evade the lightning zones. For melee builds, use short attack strings and disengage as soon as the dragon begins turning, lifting a foot, taking flight, or forming a lightning weapon.
Weaknesses
The head provides a more rewarding target when Fortissax exposes it, but reaching it safely is more important than forcing a head-only strategy.
The dragon's recovery animations create the clearest openings; the encounter does not reward continuous attacks against its legs during active movement.
Rewards
Remembrance of the Lichdragon
Runes from the boss defeat
07
Strategy
Spoilers
Story spoilers ahead. This section covers the character’s later arc and outcomes.
Travel through the underground route into Deeproot Depths and locate Fia rather than searching the region for a normal boss fog wall. Speak with her and exhaust the available dialogue so the quest state advances toward the dream encounter.
Location: Deeproot Depths
TipIf the expected interaction is missing, revisit Fia after completing the surrounding quest prerequisites instead of assuming the boss has been removed.
Watch outDo not treat the first visit to Deeproot Depths as automatic access to the boss; the dream interaction depends on quest progression.
02
Unlock the Deathbed Dream.
Satisfy the Deathbed Dream prerequisite
Continue the interactions required by Fia's storyline until the option to enter the Deathbed Dream becomes available. The important step is the interaction near Fia that transitions the player into the private dream arena.
TipRest or reload the area when a quest interaction appears to have stalled, then speak with Fia again.
Watch outLeaving the quest unfinished means there is no conventional route into Lichdragon Fortissax's arena.
03
Start the boss encounter.
Enter the Deathbed Dream
Use the available dream interaction beside Fia to load the boss arena. Prepare before confirming it, because the transition is the point at which the optional encounter begins rather than a normal exploration step.
Location: Deathbed Dream entrance
TipArrange healing, spirit, and equipment choices before entering; the arena itself is not a safe preparation room once the fight begins.
Watch outThe battle contains major story context involving Fia and Godwyn, so entering this area reveals questline material.
04
Learn the grounded attack rhythm and create a safe punish window.
Read the opening ground attacks
At the start of the fight, avoid rushing directly beneath the dragon. Circle toward a visible flank, watch for foot lifts and wing or body rotation, and strike after a completed attack has left Fortissax recovering.
Location: Deathbed Dream
TipUnlock the camera when the dragon's torso fills the screen, then retarget after the body movement ends.
Watch outAttacking through a turn often places the player under a stomp or wing sweep before the intended hit finishes.
05
Survive the area hazard without trading damage.
Evade the first red-lightning sequence
When Fortissax forms red lightning or dark electrical effects, abandon the current attack string and move toward clear ground. Wait for the lingering effect to disappear before closing the distance again.
Location: Deathbed Dream
TipRunning laterally is often more reliable than repeated panic rolls when the danger covers the floor.
Watch outRemaining inside the lightning area can cause repeated damage and Death blight pressure, turning a successful dodge of the initial strike into a failed escape.
06
Reduce the boss's health while preserving healing and stamina.
Punish recovery windows
Return to offense after bites, sweeps, stomps, and aerial landings have fully resolved. Use short attack strings, then reset your position so the next body turn or lightning cast cannot catch you committed.
Location: Deathbed Dream
TipA safe limb or body hit is preferable to a risky head chase if Fortissax is already rotating away.
Watch outDo not continue a combo simply because the first hit connected; the dragon's follow-up movement is frequently the dangerous part.
07
Avoid the aerial impact and its follow-up hazard.
Respond to aerial attacks
When the dragon takes flight, stop pursuing and track its descent path. Roll at the landing or dive timing, then move away from any red-lightning residue before attempting a counterattack.
Location: Deathbed Dream
TipUnlocking the camera can make it easier to read the dragon's position when the lock-on view points into its body.
Watch outThe landing zone may remain dangerous after the impact, so a successful roll does not always mean it is safe to attack immediately.
08
Defeat Lichdragon Fortissax and receive the Remembrance of the Lichdragon.
Finish the encounter and collect the reward
Continue the cycle of spacing, hazard evasion, and recovery punishment until Lichdragon Fortissax is defeated. Confirm the reward before leaving the arena, then return to the normal quest route if you are pursuing Fia's ending-related content.
Location: Deathbed Dream
TipRecord the reward choice you want before exchanging the Remembrance, because the exchange is a build decision rather than an automatic upgrade.
Watch outDefeating Fortissax resolves the boss fight but does not substitute for every remaining Fia quest interaction or guarantee that the player has completed the ending route.
08
Pre-fight checklist
Advance Fia's quest until the Deathbed Dream interaction is available.The boss is accessed through quest progression in Deeproot Depths.
Bring a build plan that can disengage quickly.Long attack strings are especially dangerous when red lightning begins.
Prepare for Death blight-related pressure.Use the defensive or cleansing tools your build can access, and avoid lingering in hazardous effects.
Leave room around the dragon.Do not let the fight drift into an arena edge where the camera and lightning zones overlap.
Choose whether to use melee, ranged attacks, or summons.Each approach works best when it preserves visibility and mobility rather than encouraging constant trading.Optional
Check the Remembrance exchange options after victory.The Remembrance of the Lichdragon is a choice-based reward.Optional
09
Weaknesses and damage
Weaknesses and damage
Strengths
Large area coverage from the body, wings, feet, and tail makes close-range positioning hazardous when the player ignores movement tells.
Red lightning gives Fortissax persistent control over sections of the arena rather than relying only on a single impact.
The dragon's size can obscure its feet and attack animations, particularly when the camera remains locked at close range.
Aerial movement and lightning residue can punish players who attack immediately after dodging the visible impact.
Weaknesses
Fortissax has committed animations that leave recovery windows after completed bites, sweeps, stomps, and landings.
The head can be attacked when exposed, allowing accurate players to convert a safe opening into stronger pressure without standing in an active hazard.
The encounter becomes more manageable when the player preserves open floor and refuses to fight inside red-lightning effects.
Ranged attacks and spells can exploit the dragon's size from a controlled distance, provided the player continues tracking aerial movement and does not stand still during casts.
Best uses
Choose deliberate melee attacks when you are comfortable reading the feet and body rotation; this keeps pressure on the boss without requiring a dedicated ranged setup.
Choose ranged damage when maintaining distance helps you see the red-lightning tells, but reserve stamina and movement for evasion instead of emptying every resource into one cast.
Use a summon or co-op partner only if the added damage is worth the increased health and unpredictability associated with multiplayer-style scaling; do not rely on the dragon facing another target as a permanent safe zone.
10
Failure conditions
Spoilers
Story spoilers ahead. This section covers the character’s later arc and outcomes.
Death from a body sweep, stomp, bite, or wing attackThis usually occurs when the player commits to an attack while Fortissax is turning or when the player remains beneath a lifted foot. Wait for the full animation to resolve before punishing.
Death inside red lightningDodging the initial impact is not enough if the player remains in the lingering effect. Leave the marked or visibly charged ground before resuming the fight.
Death blight buildupDeath-related hazards can turn a prolonged stay near the boss into a sudden loss. Create distance from the cloud or lightning area and use available defensive or cleansing options rather than trying to out-heal the buildup.
Loss of the fight to camera obstructionThe dragon's body can hide feet, wings, and landing cues. Unlock the camera, move into open space, and retarget only when the attack direction is readable.
Quest progression not being availableIf Fia's dream interaction does not appear, the player has not met the relevant quest conditions or has not refreshed the area after advancing them. The boss is not reached through an ordinary field entrance.
On failure
The encounter is an optional dream battle. If the player dies, return to the arena through the normal respawn and quest-access route; no separate permanent checkpoint mechanic is specified here.
11
Rewards and drops
Spoilers
Story spoilers ahead. This section covers the character’s later arc and outcomes.
Rewards and dropsSpoilers
Remembrance of the Lichdragon
The boss's Remembrance can be exchanged through the game's Remembrance-reward system for one of the unique rewards associated with Lichdragon Fortissax. It is also possible to retain it for later use rather than spending it immediately.
Runes
Defeating the boss grants a rune reward. The exact amount is not listed here because it can vary with game cycle and multiplayer conditions.
Victory completes the combat portion of the dream sequence and allows the player to continue the associated Death-related storyline. The boss reward is separate from the Mending Rune of the Death-Prince, which depends on the wider quest.
12
Lore
Spoilers
Story spoilers ahead. This section covers the character’s later arc and outcomes.
Lichdragon Fortissax is presented as an ancient dragon connected to and the corruption of death. The battle takes place in a dream linked to , whose role as a Deathbed Companion places her directly within the story of those who live after death and the consequences of Godwyn's transformation. The dragon's blackened appearance and red lightning distinguish it from ordinary dragon encounters and reinforce the connection between draconic power and Death.
Fia's storyline frames the encounter as more than a territorial boss fight. Fortissax is encountered as a guardian within the dream surrounding Godwyn, and the battle exposes the tension between the dragon's ancient identity and the death-tainted state represented in the arena. Players who complete the relevant quest branch can obtain the , tying the optional boss to one of the game's alternate ending paths.
The dream setting also explains why the encounter does not function like a normal location boss. The player reaches the arena through Fia's quest rather than discovering Fortissax on the ordinary map, and the battle's unusual lightning effects visually connect its attacks to the broader Death storyline. These details make Deeproot Depths and the Deathbed Dream important narrative locations even for players who are not pursuing every ending.
13
Encounter-related entities
Spoilers
Story spoilers ahead. This section covers the character’s later arc and outcomes.
FiaQuest character who enables access to the Deathbed Dream.
Deeproot DepthsRegion where Fia and the dream access point are found.
Fia's ChampionsBoss encounter encountered earlier in the route to Fia.
Godwyn the GoldenStory figure linked to the dragon's dream and the spread of Death.
Remembrance of the LichdragonUnique reward received after the boss victory.
Mending Rune of the Death-PrinceQuestline item connected to Fia's alternate-ending route.
14
Other bosses
Spoilers
Story spoilers ahead. This section covers the character’s later arc and outcomes.
Lichdragon Fortissax is one of the game's optional bosses whose encounter is accessed through a character quest and a dream rather than a standard overworld approach.
The boss's red lightning visually separates it from the more familiar golden lightning used by several other dragon-related characters and encounters.
The Remembrance reward and Fia's ending-related storyline give the fight both a mechanical purpose and a narrative purpose, even though defeating Fortissax is not required for the main story.
The encounter's location in the Deathbed Dream reflects the game's recurring use of dreams and private spaces to reveal events that cannot be reached through ordinary exploration.
16
Frequently asked questions
Spoilers
Story spoilers ahead. This section covers the character’s later arc and outcomes.
Where do you fight Lichdragon Fortissax?
The fight takes place in the Deathbed Dream, which is accessed through Fia in Deeproot Depths. It is not a normal field encounter with a separate entrance elsewhere in the region.
Is Lichdragon Fortissax required to beat Elden Ring?
No. Fortissax is an optional boss. Players fight it for the Remembrance, its lore, and the combat and quest rewards connected to Fia's storyline.
How do you unlock the Lichdragon Fortissax fight?
Advance Fia's quest in Deeproot Depths until the Deathbed Dream interaction becomes available, then enter the dream through the interaction near Fia.
What is the safest general strategy against Fortissax?
Keep open space, attack after completed body or head animations, and immediately leave red-lightning areas. Avoid committing to long combos beneath the dragon, because foot, wing, and lightning attacks can overlap there.
What does Lichdragon Fortissax drop?
The main unique reward is Remembrance of the Lichdragon, along with runes from the defeat. The exact rune amount is not included because it varies with game conditions.
Does defeating Fortissax give the Mending Rune of the Death-Prince automatically?
No. The Mending Rune of the Death-Prince is tied to the wider Fia questline. Defeating the dragon resolves the dream battle, but the player must still complete the relevant quest interactions.
Should you target the head or the body?
Target the head when it is safely exposed after an attack, but do not force a head-only plan. Body or limb hits after a completed sweep can be safer than chasing the head while Fortissax is turning.
What should you do when Fortissax starts using red lightning?
Stop attacking, move laterally toward clear ground, and wait for lingering effects to disappear. Rolling through the first impact while remaining in the charged area can still result in damage or Death blight pressure.
17
Relationships
Questline
Locations
Story
Rewards
Progression
Select any portrait to jump to that relationship
Questline
F
Fia
Quest access
Fia's quest progression unlocks the Deathbed Dream encounter.
Optional group boss guarding access to the area around Prince of Death’s Throne and connecting to Fia’s questline in Deeproot Depths.Fia’s ChampionsAn earlier encounter on the route to Fia in Deeproot Depths.
Optional late-game boss guarding the upper approach to Elphael, Brace of the Haligtree.Loretta, Knight of the HaligtreeLoretta, Knight of the Haligtree is a mounted demigod-aligned boss encountered at the end of Miquella's Haligtree in Elden Ring. She combines sweeping halberd attacks with powerful glintstone sorcery and a spectral greatbow.
Optional early-game dungeon boss and recurring enemy encounterMad Pumpkin HeadMad Pumpkin Head is a recurring armored humanoid boss in Elden Ring. Its oversized iron pumpkin helmet protects the head, while heavy swings from a flail or hammer punish players who remain directly in front of it.
Recurring dungeon and field bossMagma WyrmMagma Wyrm is a recurring Elden Ring boss that fights with molten breath, lava trails, heavy blade swings and charging attacks. Its enclosed arenas reward patience, lateral movement and attacks against its head.