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

Cheat                        Result 
-----------------------------------
General Cheats             
==============        
THUGSTOOLS                 - All Level1 Weapons 
PROFESSIONALTOOLS          - All Level2 Weapons  
NUTTERTOOLS                - All Level3 Weapons 
ASPIRINE                   - Full Health 
PRECIOUSPROTECTION         - Full Armor 
FANNYMAGNET                - Ladies Magnet (women follow you) 
YOUWONTTAKEMEALIVE         - Higher Wanted Level  
LEAVEMEALONE               - No Wanted Level 
ICANTTAKEITANYMORE         - Commit Suicide 
youcantleavemealone        - can't die
fullcitypeoplemines        - buy full city
freewayforangeljoy         - Get 100 bikes
americahelicopter          - get ahunter helicopter
flyingways                 - get a aeroplane dodo or kimo
DEMONSPEED                 - makes faster the whole city including Tommy
leavemealone               - No Police
jetcomes                   - spawns a jet plane
finish                     - finishes your mission
nomission                  - complete the mission