"Take them down, using even the damage as vengeance."
This is a first-person survival horror.

■Parasitic Progress System
The "parasitic progress " is increased by taking damage from enemies or performing special actions.
The maximum HP value will decrease, but depending on the percentage of progress, special bonuses will be triggered.
It is up to you to decide whether you want to play a steady strategy with less damage or take damage and use special bonuses to push your way through!

■Weakness Transmission System
A moving corpse will attack you without regard to your attacks.
If you can shoot through their weak points, you can silence their onslaught.
However, they do not easily expose their weak points.
Use "Weakness Penetration" to find their weak points and put a bullet through them!