Press "~" to open the console and enter one of the following commands: 
 

god - Toggle God mode 

version - Return game version 

map - Load another map (see further on for possible maps) 

mapcomplete - Mark the map as completed (putting you at the next map) 

noclip - Toggle walking through obstacles 

respawn - Toggle monster from respawn 

monster - Turn monsters off 

developer - Toggle developer mode 

record - Start recording a demo 

stoprecord - Stop recording a demo 

play - Play a recorded demo 

stopplay - Stop playing a recorded demo 

musictrack - Change the current playing musictrack 

prestrack - Last music track played 

drawface - Toggle drawing of texture faces 

drawtris - Draw the map sections 

drawgun - Toggle the drawing of weapons held 

drawone - ? 

drawportal - Toggle Outlining of portals and doors 

drawnormal - toggle Draw wall normals 

pview - Toggle 3rd person or static view 

drawbound - Toggle highlighting of bound objects 

drawcell - Toggle highlighting of individual cells 

fov - Change the field of view 

jumpstep - Change the jumpstep value 

groundacc - Accelleration speed on ground 

groundslow - Slowing speed on ground 

gravity - Gravity 

exit - Quit the game 

maxspeed - Maximum moving speed 

airacc - Acelleration in the air 

airslow - Slowing in the air 

soundsys - change current used sound system 

bombslow - Speed at which bombs slow 

musicvol - Ingame music volume 

soundvol - Ingame sound volume 

autoswitch - Toggle autoswitch weapons mode 

fullscreen - Toggle between full screen or windowed mode 

colordepth - Change the current bitdepth 

videomode - Change the current videomode 

bms - Change bms? 

bmd - Change bmd? 

statutbar - Toggle the HUD display 

animspeed - Animation speed 

lightmap - Toggle lightmapping 

cullface - Toggle backface culling 

renderent - Toggle rendering of entities 

directstart - Toggle direct start? 

eps - Change eps? 

offset - Change offset? 

leaf - Change leafs? 

noscript - Toggle the scripting in the engine on or off 

resetgame - Reset internal game state 

saveconfig - Save current config to file 

loadconfig - Load config from file 

picmip - Change amount of offset pixels during mipmapping 

gamma - Change gamma 

drawfsp - Show framerate, set to 1 to turn on 

invertmouse - Invert mouse control 

cvel - Change cvel? 

pvel - Change pvel? 

prvel - Change prvel? 

plook - Change plook? 

killdepla - Amount of Depla's killed 

killmorba - Amount of Morba's killed 

killzeubat - Amount of Zeubat's killed 

killsubzerat - Amount of Subzerats killed 

killzemummy - Amount of Zemummy killed 

 

Possible maps to use with the commands are: 

 

h1m0 

h1m1 

h1m2 

h1m4 

h1m5 

h1m6 

h1m7 

h1m8 

h1m9 

mapbonus1 

mapbonus2