Lichdragon Fortissax is a huge four-winged dragon that attacks with lightning. Reaching it requires traveling to an underground area. Players have to go through at least two bosses before clashing with Lichdragon Fortissax.
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Where to Find Lichdragon Fortissax Secret Boss In Elden Ring
The Lichdragon Fortissax secret boss can be found in the deepest parts of Deeproot Depths in Elden Ring.
First, start Fia’s questline. After giving the broken dagger to D, Hunter of the Dead, players must travel to Nokron and beat the Valiant Gargoyle boss. A coffin will spawn at the end of the boss room. Interacting with the coffin teleport players to another hidden area, Deeproot Depths.
Upon arriving at Deeproot Depths, head west and light the Great Waterfall Crest Site of Lost Grace and summon the Elden Ring Steed and ride west, then:
Sprint to the giant tree root that connects two platforms. Jump on the root then keep following its path until players reach the other side. Move northwest and activate the Deeproot Depths bonfire. A Palm Reader NPC should be sitting near a cliff.
Now, move northeast and go through a narrow pathway. This leads to a small building (which looks like an elegant garden house). Pick up the Deeproot Depths map fragment then keep moving southwest to the Nameless Eternal City Site of Lost Grace.
From there, go south through the giant archway and make sure to kill the knight or they’ll chase endlessly. Then, head east and climb the tree roots then move forward alongside its path.
Once the root branches into two paths, take the one on the right. Walk along the path until it ends. Jump onto the broken root on the left and move forward till a Site of Lost Grace is visible underneath.
A Site of Lost Grace should be visible from above. Drop down and light the Across the Roots bonfire. Head northwest into a large open area. Fia will be inside, but before interacting with her, players will fight in Fia’s Champions boss fight.
Beat them, then give her the Cursemark of Death and exhaust Fia’s dialogue. Now, reload the area and interact with the sleeping Fia to enter her dream.
Inside, tarnished will fight against the Lichdragon Fortissax. Upon beating the dragon, players will gain the Mending Rune of the Death-Prince to unlock the Age of Duskborn Ending.
Additionally, beating the dragon grants 90,000 Runes and the Remembrance of Lichdragon. This item can be used at the Roundtable Hold to buy two Incarnations: Fortissax’s Lightning Spear and Death Lightning.
Elden Ring is available now for PC, PlayStation 4 and 5, and Xbox One and Series X|S.
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