The game uses a first-person perspective. Players explore enclosed facilities, streets, ruins, and other hostile areas while completing objectives such as reaching destinations, rescuing allies, collecting keys, and defeating major enemies.

Joseph and Danielle share the core shooting mechanics but have distinct equipment and abilities. The campaign is divided into missions with exploration, platforming, environmental hazards, weapon pickups, health and ammunition management, and boss encounters. A multiplayer mode supports competitive matches with selectable arenas and characters.

Conserve powerful ammunition for heavily armored enemies and bosses, and use ordinary firearms against weaker targets. Search side rooms and elevated areas for weapons, ammunition, health, and armor before advancing through a mission.

Learn each protagonist’s strengths and use the appropriate equipment for the situation. In large fights, keep moving, use cover when available, and watch for attacks from off-screen or from higher platforms.