Operation Wolf Hint: Extra ammunition: Shoot the animals (eagles, pigs, etc.) during game play to collect more ammunition. Hint: Using the Zapper: To use the Zapper in the game, just shoot at the menu screen. Hint: Grenades: Do not use grenades around civilians. It will kill them and you will lose life. Hint: Grenade two vehicles simultaneously: Wait until a helicopter or gunship is near a tank. Use a grenade in between them and it will destroy both of them.