The universe of NieR is celebrated for its deep lore and mysterious optional side objectives that expand the player's understanding of its melancholic world. Among the various tasks available during the dynamic journey, the Treasure Hunt at the Castle side quest stands out as an intriguing exploration challenge located within the library and royal grounds. This guide provides step-by-step navigation and contextual strategies to help you complete the objective efficiently while securing your rare in-game rewards.

Initiating the Royal Investigation

To begin this quest, players must navigate to the designated quest giver located near the entrance of the sprawling fort area. Speaking with the continuous mechanical units triggers the request to track down several forgotten relics scattered across the abandoned rooms. It is vital to prepare your inventory beforehand as the upcoming areas contain high-level shades that will ambush unsuspecting adventurers.

Before venturing deep into the upper levels, take a moment to review your map layout to identify potential roadblocks. Many players accidentally miss the quest triggers by pushing too far into the main storyline before completing local town requests. Ensuring that your character levels are appropriately balanced will make the frantic combat encounters much more manageable.

Tracking Down the Scattered Clues

The hunt requires collecting multiple hidden parchment pieces that reveal the ultimate location of the royal treasury. The first primary piece is located near the castle library, tucked safely behind an old bookcase that requires dynamic platforming to reach. You must clear out the small group of aggressive passive shades guarding the immediate vicinity before interacting with the glowing objective marker.

After securing the first text fragment, players need to navigate toward the outer courtyard scaffolding to find the secondary clue. Be careful when managing your jumps across the decaying stone ledges, as falling forces you to restart the climbing route from the bottom floor. Paying close attention to the visual shimmering on the ground will guide you directly to the missing map pieces.

Unlocking the Hidden Treasury Room

Once all parts of the royal map are successfully assembled, a new objective waypoint will display on your screen near the lower levels. You will need to travel toward the sealed gate located beneath the grand throne room structure. Interacting with the ancient mechanism triggers a final combat encounter against a elite armored shade guardian.

Defeating this powerful opponent requires utilizing high-damage physical combos paired with active magical shield disruptions. Once the guardian falls, you can freely enter the vault to claim the historical artifact and complete the request. The reward provides valuable upgrades that significantly enhance your combat capabilities for the challenging battles ahead.