The game uses a top-down perspective. Jenosa explores a contaminated research facility, fights infected organisms and security threats, gathers resources, solves environmental obstacles, and searches for a way to contain the outbreak.

Progression depends on finding suit upgrades and equipment that open previously inaccessible routes. The facility is divided into connected areas with objectives, locked passages, hazards, and boss encounters, encouraging backtracking after major upgrades.

Conserve ammunition and pay attention to environmental hazards, since contact with the contamination can rapidly drain health.

• Search side rooms for upgrades and resources before advancing.
• Revisit earlier areas after acquiring new equipment.
• Keep moving during enemy encounters and use the room layout to create distance.
• Learn boss attack patterns instead of relying on continuous fire.