Start the game and type any one of those cheats when playing the game.

  THUGSTOOLS                      - THUG WEAPONS
  PROFESSIONALTOOLS               - PROFESSIONAL WEAPONS
  NUTTERTOOLS                     - WEIRD WEAPONS
  PRECIOUSPROTECTION              - FULL ARMOR
  ASPIRINE                        - FULL HEALTH
  YOUWONTTAKEMEALIVE              - +2 WANTED LEVEL
  LEAVEMEALONE                    - 0 WANTED LEVEL
  APLEASANTDAY                    - NICE WEATHER
  ALOVELYDAY                      - LOVELY WEATHER
  ABITDRIEG                       - CLOUDY WEATHER
  CATSANDDOGS                     - RAINY WEATHER
  CANTSEEATHING                   - MISTY WEATHER
  PANZER                          - SPAWN A TANK
  LIFEISPASSINGMEBY               - SPEED UP TIMEFLOW
  BIGBANG                         - EXPLODE NEARBY VEHICLES
  STILLLIKEDRESSINGUP             - CHANGE PLAYER SKIN
  FIGHTFIGHTFIGHT                 - PEOPLE START FIGHTING
  NOBODYLIKESME                   - MAKE PEOPLE FALL WHEN YOU BUMP THEM
  OURGODGIVENRIGHTTOBEARARMS      - EVERYONE HAS WEAPONS
  ONSPEED                         - WALK FASTER
  BOOOOOORING                     - WALK SLOWE
  WHEELSAREALLINEED               - STRIP CARS (CARS BECOME WHEELS)
  COMEFLYWITHME                   - FLIES FLYING AROUND
  GRIPISEVERYTHING                - ???
  CHASESTAT                       - ???
  CHICKSWITHGUNS                  - ???
  ICANTTAKEITANYMORE              - KILL YOURSELF
  GREENLIGHT                      - ALL TRAFFIC LIGHTS TO GREEN
  MIAMITRAFFIC                    - TRAFFIC GOES FAST
  AHAIRDRESSERSCAR                - ???
  IWANTITPAINTEDBLACK             - ???
  TRAVELINSTYLE                   - FLYING CAR
  THELASTRIDE                     - SPAWN A CASKET-CAR
  ROCKANDROLLCAR                  - SPAWN A LIMOUSINE
  RUBBISHCAR                      - SPAWN A GARBAGE TRUCK
  GETTHEREFAST                    - SPAWN A SABRE TURBO
  BETTERTHANWALKING               - SPAWN A CADDY
  LOOKLIKELANCE                   - LANCE SKIN
  MYSONISALAWYER                  - LAWYER SKIN
  ILOOKLIKEHILARY                 - HILARY SKIN
  ROCKANDROLLMAN                  - ROCK AND ROLL MAN SKIN
  ONEARMEDBANDIT                  - ONE ARMED BANDIT SKIN
  IDONTHAVETHEMONEYSONNY          - MAFIOSI SKIN
  SEAWAYS                         - ???
  LOADSOFLITTLETHINGS             - ???
  HOPINGIRL                       - DOESN'T WORK
  AIRSHIP                         - ???
  FOXYLITTLETHING                 - MAFIOSI DAUGHTER SKIN
  WELOVEOURDICK                   - SCOTTISH SKIN
  GETTHEREQUICKLY                 - FAST CAR
  GETTHEREVERYFASTINDEED          - FASTER CAR
  GETTHEREAMAZINGLYFAST           - EVEN FASTER CAR
  FANNYMAGNET                     - WOMEN MAGNET
  CHEATSHAVEBEENCRACKED           - BALDGUY SKIN
  CERTAINDEATH                    - CIGARRETTE IN MOUTH
  DEEPFRIEDMARSBARS               - DOESN'T WORK
  PROGRAMMER                      - DOESN'T WORK