While ingame bring down console and type the following Devastation codes (you
 will not get any message if the cheat is successful, you will however if
 entered incorrectly):

 dopefish       - All weapons, god mode, money
 god            - God mode
 allammo        - 999 ammunition
 ghost          - No-clipping mode
 fly            - Fly mode
 walk           - Resume normal mode

 sptravel x     - Level select where x might be

                  SP0M0-TheLab.dvs
                  SP0M0-TheLab2.dvs
                  SP0M1-SomaSunset.dvs
                  SP0M2-Chinatown.dvs
                  SP0M3-TopOTheTower.dvs
                  SP0M4-TheRock.dvs
                  SP0M5-Embarcadero.dvs
                  SP1M1-UrbiaSouth.dvs
                  SP1M2-UrbiaAsylum.dvs
                  SP1M3-UrbiaNorth.dvs
                  SP1M4-Docks.dvs
                  SP2M0.dvs
                  SP2M1-MarketMadness.dvs
                  SP2M2-CardboardCounty.dvs
                  SP2M3-TheAquifers.dvs
                  SP2M4-IchthyaSouth.dvs
                  SP2M5-IchthyaNorth.dvs
                  SP3M1-Chozo.dvs
                  SP3M2-RiversOfWaste.dvs
                  SP3M3-Zangai.dvs
                  SP3M4-Transit.dvs
                  SP3M5-Bukko.dvs
                  SP3M6-BukkoRoof.dvs