"Damn I'm Good" difficulty level God mode:
Begin a new game at the "Come Get Some" difficulty level. Enable the God mode cheat code and begin a new game under "Damn I'm Good" difficulty level.

Hidden message:
Hold [Shift] and type f*.

Cheat mode:
Press [Esc] to pause game play, then enter one of the following codes to activate the corresponding cheat function.

Effect	Code
Toggle God mode	dncornholio or dnkroz
All weapons, maximum ammo, all keys	dnstuff
Maximum armor, all keys	dnitems
Unlimited steroids	dnhyper
Level select	dnscotty<episode number><level number>
Press [Space] for money	dncashman
Alternate viewpoint	dnview
Display frame rate	dnrate
Change skill level	dnskill<skill level 0-4>
"Pirates Suck" message	dnbeta
"Register Cosmo" message	dncosmo
"Buy Major Stryker" message	dnallen
Walk through some walls	dnclip
All keys	dnkeys
All weapons and ammo	dnweapons
Display debug information	dndebug
Display coordinates	dncoords
Display entire map	dnshowmap
Toggle all doors	dnunlock
All inventory	dninventory
Toggle monsters	dnmonsters
End episode	dnending
Full health	dneat
Full ammo	dnnuk
Display message	dntime
Display message	dntodd