After enterig the "rdguns" code, tap 9 twice and you'll get a bowling ball.

Enter these codes while playing.

Code          Effect
rdall         All items and full health
rdclip        Toggle clipping mode
rddebug       Toggle debug mode
rdelvis       Toggle God mode
rdfuckngoXYY  Go to X episode and YY map
rdguns        All weapons
rdinventory   All inventory
rditems       All items
rdkeys        All keys
rdmonsters    Toggle no monsters mode
rdrate        Shows framerate
showmap       Shows map
rdskill#      Change skill number # (1-4)
rdunlock      Toggle locks

Enter "rdmoonshine" while playing to use one bottle of moonshine, even if there is none in your inventory.

Type in "rdyerat" during game play to access a debug mode.

If you want to ride a motercycle just press: rdjoseph

To get God Mode/invincibility, While playing the game type in "rdelvis"

To get all weapons type in "rdall" this code does not give you full ammo so you can get typeing it in as much as you like when you run out.