Last Edited: July 11, 2019 at 7:40 PM
This page of the IGN Wiki Guide and Walkthrough for Bloodstained: Ritual of the Night contains information on how to obtain the Millionaire’s Key, the Carpenter’s Key, and the Warhorse Key, which allow you to fight the powerful optional bosses found behind their corresponding doors.
For information on how to progress through the campaign, be sure to check out our Walkthrough, which includes a complete guide on everything from the opening crawl to the ending credits, and our Tips & Tricks page, which gives you the advice you need to conquer the castle, and every demon within.
For more information on essential equipment, check out our full Equipment and Shard lists, as well as our guide on the Best Items In Each Area Of Bloodstained.
There are several optional bosses in Bloodstained, and a few of them require special keys to unlock.
You’ll find locked boss doors as you proceed through the castle, but the keys may not be available for a long time, so read the guide below to unlock each one and challenge the bosses within.
Millionaire’s Key[edit]
Once you reach the endgame, several secret bosses will begin to become available. Finding the Millionaire’s Key will allow you to challenge the secret boss, Millionaire’s Bane.
You can find the Millionaire’s Key in a green chest in the Den of Behemoths, unlocked after you obtain Zangetsu’s sword and reveal Gremory’s treachery in the Hall of Termination and Garden of Silence.
With the Millionaire’s Key in hand, head back to the Hall of Termination and proceed right from the Stained Glass Portal.
Use the Millionaire’s Key to unlock the boss door and face the mimic above all others; Millionaire’s Bane.
Carpenter’s Key[edit]
Once you reach the endgame, several secret bosses will begin to become available. Finding the Carpenter’s Key will allow you to challenge the secret boss, Master Carpenter.
You can find the Carpenter’s Key in a green chest in Dian Cecht Cathedral after obtaining Invert from Orobas.
Travel to the Oriental Sorcery Lab and, just above the Stained Glass Portal room, use the key to unlock the boss door and fight the Master Carpenter.
Warhorse Key[edit]
Once you reach the endgame, several secret bosses will begin to become available. Finding the Warhorse Key will allow you to challenge the secret boss, Revenant.
You can find the Warhorse Key in the depths of the Glacial Tomb, just before fighting the True Final Boss.
Travel to the Garden of Silence using the Stained Glass Portal, then head left to find the boss door. Enter to find a wicked echo of a hero from a forgotten age… the Revenant.
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