Scales set  parts and how to get it：

Scaled Helm——Accept the assassination mission of the Volcano Manor, and then kill the mission target to get it.

Scaled Armor——Accept the assassination mission of the Volcano Manor, and then kill the mission target to get it.

Scaled Armor (Altered) ——Can be tailored at Sites of Grace.

Scaled Gauntlets ——Accept the assassination mission of the Volcano Manor, and then kill the mission target to get it.

Scaled Greaves ——Accept the assassination mission of the Volcano Manor, and then kill the mission target to get it.

Volcano Manor task process——Volcano Manor - ANY4GAME Elden Ring Raiders