Unzip/Unrar trainer into your game directory, then start trainer with "pztrain.exe", and finally start the game. During gameplay toggle trainer options by pressing the following key combinations:
Enable / Disable Option
F1 - Infinite Health
F2 - Infinite Soul
F3 - Infinite Ammo (Stage 9)
F4 - Infinite Exp Points
F5 - One Hit Kill
F6 - Resume All To Normal
DOWNLOADTRAINER
