Locate the optional fight
Hive Mother naturally appears in a Larva Hive in the Clay Caves. A Hive Mother Scanner can help locate her. Attacking her for the first time starts the fight.
Bring iron-level or better equipment, healing, a ranged option and enough clear floor to move. She is not required to activate the Core.
Manage the ground hazards
Move away from red circles before acid lands. Keep responding to ground acid and newly hatched larvae rather than standing still to attack the boss.
Community strategy material supports cooking Green Blister Head for ground-acid protection, with Yellow Blister Head to address slime slowing. Rugs or Wood Bridges are also used to protect movement routes. These measures do not make direct acid projectiles or larva attacks harmless.
Prepare useful floor coverage before the fight, but do not treat a precise trench or stationary spot as guaranteed safety.
Keep larvae from surrounding you
Eggs around the arena produce enemies. Reduce the pressure from adds while preserving an escape route. Large larvae can break walls, so a simple enclosure is not permanent crowd control.
Her attacks become more intense at low health. Save healing and keep space available to leave the next red circle.
Rematch and progression
For another fight, use a Hive Mother Summoning Idol from the Cloaked Merchant on her rune. If your goal is the Great Wall, you still need Malugaz’s Stolen Crystal Heart. Exact trap counts, health values and drop rates are not asserted here as current 1.3 values.