Beat the game once with Leon on any difficlty and any rank.
Beat the game once with Clair on any difficulty and with any rank.
Complete either character's first and second scenarios in less than three hours. A zombie in a uniform will appear after both missions are completed to confirm correct code entry. Load the saved game and begin the first scenario by going to the police station without collecting any items. Quickly move past the zombie that appears in the alley near the police station. Collect the shotgun, then kill the zombie. Take the special key from the zombie's body to open the lockers with alternate uniforms. Claire has a denim jacket, with a quick shooting revolver. Leon has two alternate uniforms (a leather jacket with skull emblem, or a tank top and baseball hat), one of which will allow him to shoot with one hand.
Begin game play then press Start to display the options screen. Select the "Button Config." option and highlight "Aim".
Before you use the custom parts on the VP70(Handgun), Desert Eagle(Magnum) or Shotgun use the remaing ammo in the clip/breech. When you use the custom parts to upgrade the gun it will automatically be fully loaded. This may seem like a small amount of ammo but can go a long way in the harder difficuties were ammo is rarer.