Various Cheats:
Press ~ to get the game console then put in one of the following codes

xfly - Flight (Also reported as just fly)

xgod - Invincibility (Also reported as just god)

xghost - No clipping mode (Also reported as just ghost)

killpawns - All enemies killed

setspeed <number> - Set speed to <number> 2 is normal mode

setjumpz <number> - Set jump height to <number> 500 is normal

xwalk - fly mode and clipping off (Also reported as just walk)

summon - ????

allammo - ????

open map00 - Replace 00 with a number between 00 and 40 to open level

icandoit - Win level

upgrademe 1 - Get level upgrades. You can replace 1 with 2-4

Hex Cheat:
the SYSTEM folder under the installed folder, edit the USER.INI file. At the end of the file in the [XMenu.NewCharacterWindow] section, are the lines describing the available player slots. The following line will start the game, using the first slot, with maximum health, weapons, abilities, powerups, and all skins unlocked:

SavedEnforcers[0]=(Name="Player",Difficulty=1,CurrMap=0,MaxHealth=400,
speed=1.000000,Targeting=0.000000,RepairRate=3.000000,Ammo=2.000000,
Jump=2.000000,ResearchPoints=9999,WeaponUpgrades[0]=4,
WeaponUpgrades[1]=4,WeaponUpgrades[2]=4,WeaponUpgrades[3]=4,
WeaponUpgrades[4]=4,WeaponUpgrades[5]=4,WeaponUpgrades[6]=4,
WeaponUpgrades[7]=4,WeaponUpgrades[8]=4,WeaponUpgrades[9]=4,
WeaponUpgrades[10]=4,WeaponUpgrades[11]=4,WeaponUpgrades[12]=4,
WeaponUpgrades[13]=4,WeaponUpgrades[14]=4,WeaponUpgrades[15]=4,
WeaponUpgrades[16]=4,WeaponUpgrades[17]=4,WeaponUpgrades[18]=4,
WeaponUpgrades[19]=4,WeaponUpgrades[20]=4,WeaponUpgrades[21]=4,
WeaponUpgrades[22]=4,WeaponUpgrades[23]=4,WeaponUpgrades[24]=4,
WeaponUpgrades[25]=4,WeaponUpgrades[26]=4,WeaponUpgrades[27]=4,
WeaponUpgrades[28]=4,WeaponUpgrades[29]=4,FinishedGame=1,
XBaseSkinName="EnforcerTrooperBaseSkins.BlueDemon")

Note: The above 14 lines are all on *one* line in USER.INI.

By changing the "CurrMap=" section, any of the 40 available maps can be accessed.