god             - Toggle God Mode
noclip          - Toggle No Clip Mode
wuss            - All Weapons
health #        - (1-100)Give Health                                
notarget        - Enemies cannot see you                
give all        - All Weapons and Ammo
map             - Level Select  
health #        - Set health level (# is the amount of health you want)
cg_cameradist -45 - First person view.
cg_cameradist 128 - Default view 
fps             - Change the frame rate
give (item name)- Spawn different items (see below for list)

Full Version Trick:

To access the above codes for the full version first enable the console

window in the game options. During gameplay press the tidal "~"

key (the key above the tab key) and the Esc key. This will bring up a window

with some game paths and tech stuff. At this point you can now type any

of the

Map Names:

Use one of the following entries with the map code.

centipede1
centipede2
facade
fortress1
fortress2
funhouse
garden1
garden2
garden3
garden4
grounds1
grounds2
gvillage
hedge1
hedge2
hedge3
jlair1
jlair2
keep
pandemonium
potears1
potears2
potears3
qlair
rchess
skool1
skool2
tower1
tower2
tower3
utemple
wchess1
wchess2
wforest 

Item Names:

Use one of the following entries with the give code.

w_knife.tik
w_cards.tik
w_mallet.tik
w_jackbomb.tik
w_eyestaff.tik
w_icewand.tik
w_jacks.tik
w_blunderbuss.tik
w_demondice.tik (Use multiple times to get all three Demon Dice)
w_ragebox.tik
w_watch.tik 

Thanks to Revolution readers overseer and Zeke of Orcs!