Lies Of P Overture has you collecting Black Rabbit Hole keys that unlock secret doors, just like the Trinity Keys in the base game. There are 4 such keys to collect and doors to unlock in Overture, and in this guide we have put up for you the locations for each of them, including the rewards that they unlock.
Black Rabbit Hole Key #1
You get the first Black Rabbit Hole key by purchasing it from the Wandering Merchant in the Carnival Garden area for 1500 Ergo. The Merchant is in front of the Botanic Garden, just down the path from the Merry Go Round.
Black Rabbit Secret Door #1
Take the path right of the merchant, pass the ‘Marion’ on the right, and just behind the ‘Clown Knock-Down’ is the first Black Rabbit Secret Door.
Rewards: The Eccentric’s Mask & Piercing Death’s Hunting Apparel
Black Rabbit Hole Key #2
Equip the Piercing Death’s Hunting Apparel that you obtained previously, and that automatically gets you the 2nd Black Rabbit Hole Key
Black Rabbit Secret Door #2
The 2nd Black Rabbit Secret Door is to the right of the Miraculous Flower Garden in the Eventide Hotel.
Rewards: The Youngest’s Mask & Permeating Death’s Hunting Apparel.
Black Rabbit Hole Key #3
When you equip the mask and the apparel obtained as a reward above, you get a Delivery Receipt collectible, which points towards the location of the 3rd key: the Zelator Underground Facility. Here, as part of the normal exploration, you will come to the 2nd Stargazer ‘Security Area’.
From here, on the left is a platforming area that has you carefully lining up to land on the railing below, while avoiding the periodic steam release that can cause the Freeze debuff. Eventually, you will come to a ladder that drops you below, and the blue collectible there is the 3rd Black Rabbit Hole Key.
Black Rabbit Secret Door #3
Start from the first Stargazer in this area, take the stairs up on the right, and you will come across a small opening on the left that gets you the 3rd Black Rabbit Secret Door.
Rewards: The Eldest’s Gas Mask & Black Death’s Protective Apparel
Black Rabbit Rabbit Hole Key #4
Start from the Pistris Harbor Stargazer, and make your way down the ladder. Take the path down, and turn the switch to get the submarine to come down. This opens up a path, take that, and the blue collectible just ahead is the 4th and last Black Rabbit Hole Key.
Black Rabbit Secret Door #4
Start at the Krat Lighthouse, take the stairs to the very top. A cutscene triggers showing the Rose Estate. Use the ladder outside to climb down. The Secret Door is just after you have used the second ladder to climb down, on the left.
Rewards: The Battle Maniac’s Mask & Blazing Death’s Hunting Apparel.
These are 4 costumes that you unlock, and they help in moving towards completing all the 11 trophies that Lies Of P Overture has to offer.
