Swipe/arrows/WASD merge to damage the rival. Every third slide, choose an empty rubble landing or intercept for8 energy. Arm a shield earlier if desired. Rubble is permanent; a full-board unshielded attack collapses the line. R restarts; Tab/Enter supported.

Original compact interpretation; scenario rules and goals differ from the inspiration. No copied assets. See source notes and complete QA replay sequences.