Enter the following codes during the game.


Code          Effect
rdelvis       god mode
rdall         all guns, ammos, items and keys
rdmeadow      level warp(episode#)(level##)
rdunlock      toggle locks
rditems       All items
rdmoonshine   Moonshine
rdcritters    Monster Respawning
rdclip        clip mode
rdguns        all guns
rdinventory   full inventory
rdkeys        all keys
rdjoseph      Motor bike
rdmrbill      Increase damage
rdrhett       Suicide
rdaaron       Mushroom mode
rdnocheat     disable cheats
rddonut       Boat
rdkfc         chicken mode
rdcluck       mark open doors with feathers
rdtony        shrinking opponents
rdvan         larger opponents 

Thanks to Revolution reader Macca!