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Although unlocking the Armory is optional in Blue Prince, it offers special items that grant game-changing effects.
The rogue-like puzzle game Blue Prince tasks players with finding Room 46 by navigating and solving different rooms in the mysterious Mt. Holly estate. While the game features a wide variety of rooms, each providing unique effects and benefits—some are not available by default. One such powerful room is the Armory, a shop-type room that sells weapons and armor. It is a special room that requires a specific method to unlock. This guide explains how to unlock the Armory in Blue Prince and why doing so is worthwhile.
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How To Unlock Armory in Blue Prince
The Armory can only be unlocked by solving the chess puzzle at the Underground Precipice and choosing the power of the Knight. You can reach the Underground Precipice by lighting all four blue braziers. While exploring the Precipice, you will find a room in a nook with an unusual chessboard. This board features a 5×9 layout, resembling the blueprint of the house.
As you explore the different rooms, you will find a specific chess piece in most of them. You need to place the chess pieces on the board in the corresponding positions that match the rooms’ locations in your current layout. When correctly placed, a chess piece will glow white. Placing all six pieces solves the puzzle.
Then, you will be able to choose the power of a specific chess piece. Picking the Knight power grants you the Mantle of the Knight effect. It adds the Armory to your draft pool, allowing you to draft the room as long as the effect is active. You can also revisit later and solve the chess puzzle again to choose different piece powers.
Why You Should Unlock the Armory in Blue Prince?
The Armory offers some of the best in-game items, enhancing your playthrough with unique effects.
- Self-Igniting Torch: Can light candles and ignite fuses.
- Morning Star: Can knock the locks off chests and trunks. Tomorrow, gain 1 Star.
- Knight’s Shield: Once per day, while drafting, you can equip the Knight’s Shield to ignore the negative effect of any one Red Room.
- The Axe: You may use the Axe in the Room Directory to permanently remove the Gem cost from one Room.
Unlocking and drafting the Armory is also crucial for earning The Explorer’s Trophy, which requires completing the Mt. Holly Directory.
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