Always keep an eye on the "Cure Progress" bar. If it hits 75%, drop everything and invest in Genetic Reshuffle or symptoms that cause Paranoia and Insanity to stall the scientists.
Your ending depends directly on your final infection gauge percentage when you deliver the final blow:
To restore power, locate the breaker panel in the Control Room. The fuses are burned out.
I can provide a step-by-step strategy to get you through the toughest sections.
Collect the from the Security Armory. Do not fire it unless cornered, as the noise alerts every enemy on the floor. Step 2: Overriding the Coolant System
To restore power to the gate, route the power grid cables in the basement. Connect the Blue Transformer to Node B , and the Red Transformer to Node D .
The Alpha is immune to bullets at the start. Run to the first generator and flip the switch to overload it. This electrocutes the boss, temporarily exposing its glowing core.
This is the final stretch of the game. Resources are incredibly scarce here.
Throw a flashbang to stun them, then shoot the exposed parasite stem on their upper back. Keycard Locations
Parasite Infection Game Walkthrough [patched] 【2026 Update】
Sample Key Scenes (with player choices)
Always keep an eye on the "Cure Progress" bar. If it hits 75%, drop everything and invest in Genetic Reshuffle or symptoms that cause Paranoia and Insanity to stall the scientists.
Collect the from the Security Armory. Do not fire it unless cornered, as the noise alerts every enemy on the floor. Step 2: Overriding the Coolant System
To restore power to the gate, route the power grid cables in the basement. Connect the Blue Transformer to Node B , and the Red Transformer to Node D . The fuses are burned out
The Alpha is immune to bullets at the start. Run to the first generator and flip the switch to overload it. This electrocutes the boss, temporarily exposing its glowing core.
This is the final stretch of the game. Resources are incredibly scarce here.
Throw a flashbang to stun them, then shoot the exposed parasite stem on their upper back. Keycard Locations