: When you kill an enemy piece, you capture its soul. You can use a soul card to move exactly like that piece (e.g., a Knight's L-shape or a Rook's straight lines) for one turn. Progression & Cards
After clearing each floor by killing the enemy King, you must choose one of two pairs of cards.
: Reaching 5 Firepower is a major milestone, as it allows you to one-shot Queens and Rooks, drastically reducing the threat level on the board.