In order for gas zombies to appear, the game must be played up until after Case 6-1: Help Arrives.
5. After you have the modified motorcycle, you should be able to drive through zombies on the strip or in the underground until your bike breaks. Each time you want to drive the bike again, you will need to attach the chainsaw in order to modify the bike again.
|Achievements and Trophies|
|Apprentice Rising - Bartender - Better With a Friend - Big Spender - Chuck Greene: Cross Dresser? - Clean Record - Come On! Follow Me! - Curiously Inventive - Custom Finish - DR2 Trophy Master - Death From Afar - Don't You Die On Me! - Duct Tape FTW - Explosive Temper - Fashion Aficionado - Father of the Month - Father of the Year - Finally Full - Full Deck - Half Deck - Having a Gas - He Hasn't Covered Wars... - Head Trauma - Hero of Fortune City - Improper Behavior - Judge, Jury and Executioner - Justice Served - Life Saver - Look At All That Juice! - Masquerade - Needs More Chainsaw - Professional Rising - Rising Star - Saving the Day - Slaughter - S = Laughter - Smashy - Stick 'em Up! - TK's Favorite - Tape It or DIE! - The Skill to Survive - Tough Guy - Vigilante Justice - Win Big! - Window Shopper - Wrong Kind of Chopper - Z-Genocider 2: Genocide Harder - Zombie Destruction - Zombie Fu - Zombie Genocide Master - Zombie Slaughter|