Lernaean Bone Hydra

The Asphodel boss, a giant skeletal hydra that detaches severed heads to attack you from several angles at once.

The Lernaean Bone Hydra is the boss of Asphodel, the second region, where lava is a constant threat and standing still gets you burned. The Hydra is a large, stationary skeletal serpent, and the fight is less about dodging one body and more about managing the extra threats it spawns as its health drops.

The fight and its attacks

The Hydra’s main body anchors the arena and attacks from a fixed position, so you spend the early phase reading its strikes and chipping it down. The defining mechanic comes later: as the fight goes on it detaches severed heads that act independently, attacking you from their own angles while the main body keeps pressuring you. That turns a single-target fight into a multi-threat one, and it happens in a room where the floor itself can hurt you.

How to approach it

Movement is everything here because of the lava. A move-speed boon from Hermes and an extra dash from the Mirror of Night keep you off the burning floor while you reposition around the severed heads. Athena’s deflect again earns its slot against the Hydra’s ranged spit. For offense, anything that hits multiple targets or applies a status pays off once the heads detach, because you can spread damage instead of focusing one mouth at a time. A knockback build can buy space, and a strong single-target build can race the fight before the head count gets out of hand.

Do not get pinned between a severed head and the lava. The heads are positioned to herd you into the floor hazard, so always dash toward open ground, not toward the wall.

What makes it hard

The jump in difficulty is the shift from one target to many. Players who beat the Furies by standing and trading discover that the same approach gets them surrounded here, with heads hitting from behind while the body attacks from the front and lava limits where they can stand. Asphodel as a whole hits harder than Tartarus, so you often arrive with less health than you would like, which makes the head phase unforgiving.

What beating it means

Clearing the Hydra opens Elysium and the duo fight against Theseus and Asterius, which doubles down on the lesson the Hydra teaches: handling more than one threat at a time. Asphodel is also where Eurydice lives, so a Nectar gift here earns you the Evergreen Acorn keepsake for safer boss openings going forward.