In the option enable the console, press [~] in the game to open it and
 type in:

 god            God mode ON/OFF
 wuss           All weapons
 noclip         No Clipping ON/OFF
 health #       Set health to # (100 is max)
 notarget       Invisibility
 cg_cameradist -45   First person view
 cg_cameradist 128   normal view
 give all       All weapons and ammo
 give [item]    Create item, where [item] might be:
                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 this multiple times to get all three Demon Dice)
                w_ragebox.tik
 map [mapname]  Warp to map [mapname], where [mapname] might be:
                gvillage
                pandemonium
                fortress1
                fortress2
                skool1
                skool2
                potears1
                potears2
                potears3
                utemple
                garden1
                garden2
                garden3
                garden4
                centipede1
                centipede2
                wforest$wforest_start1
                wchess1
                wchess2
                rchess
                funhouse
                hatter1
                hatter2
                jlair1
                jlair2
                wforest$wforest_start2
                hedge1
                tower1
                hedge2
                tower2
                hedge3
                tower3
                grounds1
                grounds2
                facade
                keep
                qlair