What is confirmed
KONAMI describes Arcana as defeated bosses sealed into Rose’s tarot cards, granting spells and special actions. The game also features seven weapon categories and equipment called Relics. The Vampire Killer whip is used for combat and movement.
These are system descriptions from the official website, not a complete list of unlock requirements.
Separate a location from a requirement
A useful guide should answer two different questions: where something is, and what you need to obtain it. This atlas focuses on the first question wherever the game data gives a defensible location.
Do not infer a reward, a required spell, a boss weakness or a guaranteed drop from a marker name. Those details need gameplay evidence. For now, use the map to orient yourself and the game’s own descriptions to decide which equipment to use.
Choose how much to reveal
Boss names and secret locations can change the feeling of a first playthrough. The atlas hides those categories by default. Turn on the spoiler switch only when you want to see them; normal room outlines and navigation remain available.
For current game information, follow the official KONAMI website linked in the sources section.