Note: To use these codes simply enter then in the console ('~' key toggles console)

Cheat Codes:

 

playbetter - god mode on/off
twoweeks - powerup on/off
meatwagon - kill all non-boss monsters
victor - kill all monsters (including BOSS)

Other Codes:

 

angermonsters - monsters get angry
crazymonsters - monsters out for blood
kiwi - clipping on/off
showcoords - show coordinates
weapprev - select previous weapon
weapnext - select next weapon
suckitdown chicken - Turns you into a chicken
suckitdown all - Gives you all (usefull) items
suckitdown health - Gives you maximum health (100%)
suckitdown mana - Gives you maximum offensive and defensive mana (100%)
suckitdown armor - Gives you silver armor; second use gives you gold armor
suckitdown powerup - Gives you a Tome of Power powerup
suckitdown teleport - Heretic 2 demo only - Gives you the Teleport defence
suckitdown polymorph - Heretic 2 demo only - Gives you the Morph Ovum defence
spawn item_weapon_hellstaff - Spawns Hellstaff weapon

 

Item Spawn Code: (this is my favourite and most used code)

 

spawn <item> - create an item where <item> is one of the following item names:

 

item_weapon_firewall
item_weapon_maceballs
item_weapon_magicmissile
item_weapon_phoenixbow
item_weapon_redrain_bow
item_weapon_sphereofannihilation

 

item_defense_meteorbarrier
item_defense_polymorph
item_defense_powerup
item_defense_ringofrepulsion
item_defense_shield
item_defense_teleport

item_health_full
item_health_half

item_mana_combo_half
item_mana_combo_quarter
item_mana_defensive_full
item_mana_defensive_half
item_mana_offensive_full
item_mana_offensive_half

item_puzzle_canyonkey
item_puzzle_cloudkey
item_puzzle_cog
item_puzzle_crystal
item_puzzle_dungeonkey
item_puzzle_highpriestesskey
item_puzzle_highpriestesssymbol
item_puzzle_hive2amulet
item_puzzle_hive2gem
item_puzzle_hive2spear
item_puzzle_minecartwheel
item_puzzle_ore
item_puzzle_plazacontainer
item_puzzle_potion
item_puzzle_refinedore
item_puzzle_shield
item_puzzle_slumcontainer
item_puzzle_tavernkey
item_puzzle_tome
item_puzzle_townkey

Other/Untested Codes:

 

suckitdown
nextmonsterframe
say_team
say
use
kill
config
precache
setenv
savecfg
rcon
reconnect
connect
exit
quit
record
changing
snd_restart
userinfo
pingservers
freezeworld
autoweapon
sc_framerate
shownames
showclamp
doubletap_speed
mouse_sensitivity_y
mouse_sensitivity_x
lookstrafe
lookspring
freelook