Finding the Basement Passage Key in Pioneer Castle is an important step if you want to fully explore Pioneer Castle in Code Vein II. This guide will walk you through where to look and how to reach the key safely inside the Pioneer Castle in Code Vein II.
Where to find the Basement Passage Key inside the Pioneer Castle
To begin this section, start from the Central Stairwell Mistle inside Pioneer Castle. After activating the Mistle, turn to the right and enter the nearby room.

Follow the path forward until you step out into an open area. From here, move straight toward the southeast side, where you will clearly see a large gap separating you from another platform with several doors on the opposite side. Your goal is to reach that platform.


Carefully drop down to the lower level and make your way through the door on the southern side below.


Once inside the building, proceed forward and climb the stairs, then use the ladder to ascend even higher. Continue following this route as it leads you back outside.

From here, enter the first room you see ahead. Inside this room, you will face two enemies guarding the area. Defeat both of them, and after the fight, you will be able to pick up the Basement Passage Key.
