Cheat Codes
While playing a game, enter one of the following codes:

Code - Result:

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

Opponent viewpoint
Begin a modem multiplayer game and enable recording on the options screen. Then while playing a game, press K to view the game from your opponent's view point.