Sister Testament

A Metroid-like action exploration game where you play Euphemia, the last surviving Sister Testament—a demon-slaying warrior created by the Church. When Hell opens and swallows her sisters' souls, she descends into the Hells to free them. Armed with holy nailguns that double as keys, you explore eight vast interconnected Hell regions, unlocking new weapons and abilities as you progress. Combat centers on a counter-parry system: time your blocks to unleash powerful counterattacks with your holy tonfa blade. Defeat or capture by demons results in 18+ animated scenes with branching narrative consequences. Four difficulty modes allow casual or hardcore play, and hidden pickups expand your health, ammo, defense, and attack stats. A story of two souls—Euphemia and the mysterious 'Postman of Hell'—intertwines across your descent.