The Sword of Night and Flame is hidden in Caria Manor, located in Elden Ring Runes the northwestern region of Liurnia of the Lakes. To find the sword, follow these steps:

Step 1: Reach Caria Manor

Caria Manor is a large, foreboding estate filled with enemies like fingercreepers and spectral knights. To reach the manor:

    Start at the Liurnia of the Lakes region.

    Head northwest toward the Manor Lower Level Site of Grace, located just outside the entrance to Caria Manor.

Ensure you're prepared for tough enemies along the way. Stock up on healing flasks and other Elden Ring Items like throwable Fire Pots to deal with the fingercreepers effectively.

Step 2: Enter and Explore Caria Manor

Inside Caria Manor, you'll encounter a maze of traps and enemies. Progress cautiously, clearing rooms and activating checkpoints as you go. Your goal is to reach the Manor Upper Level Site of Grace, which is critical for the next step.

Step 3: Locate the Sword of Night and Flame

From the Manor Upper Level Site of Grace, follow these directions to find the sword:

    Exit the Site of Grace room and proceed toward the large, open rooftop area.

    Carefully walk along the narrow paths, avoiding enemy patrols.

    Look for a hidden ladder that leads to a small balcony below. This ladder can be easy to miss, so keep an eye out for it.

    Climb down the ladder, and you'll find a chest in a small room. Open the chest to buy Elden Ring Items claim the Sword of Night and Flame.