Originally mere rubble from a celestial ruin that plummeted from the heavens, this surviving fragment underwent a transformation into a formidable weapon.

A distinguished member among the legendary armaments, this sword originated from a ruin that crumbled when struck by a meteorite, and thus, it now harnesses the destructive might of that cataclysmic event.

Special Move: Wave of Destruction

Elevate the sword overhead and bring it crashing against the ground, unleashing a formidable wave of gravitational force.

Acquisition Method:

Ruins Greatsword can be acquried by defeating Misbegotten Warrior and Crucible Knight at Redmane Castle Plaza. （BOSS 3D Location）

This boss fight is only after defeating Starscourge Radahn and exhausting Witch-Hunter Jerren's subsequent dialogue.

Redmane Castle Elden Ring 3D Map - ANY4GAME Elden Ring Guide