Cheat Mode:

Start the game with the command-line parameters: -dev -console -game rewolf

(example: c:gunmangunman.exe -dev -console -game rewolf). To do this you

need make a shortcut for the game on your desktop and Right-click on it. Click

on properties and in the target field plug in -dev -console -game rewolf

after whatever is already there. Make sure you have a space between the

command line and what is already in the target field. Now use any of the codes

listed after pressing ` to bring down the console:

/god         - God Mode
/noclip      - No Clipping Mode
/impulse357  - All Weapons and Ammo 
/map X       - Goto Map X
/notarget    - Invisibility 

Map Names:
Use one of the following entries with the /map code. 
takeoff
rusted
meltdown
highnoon

frontier
cinematic1
cinematic2
cinematic3
cinematic4
city1a
city1b
city2a
city2b
city3a
city3b
end1
end2
mayan0a
mayan0b
mayan1
mayan3a
mayan4
mayan6
mayan8
rebar0a
rebar0b
rebar2a
rebar2b
rebar2c
rebar2d
rebar2e
rebar2f
rebar2g
rebar2h
rebar2i
rebar2j
rebar2k
rebar2l
rebar3b
rebar3d
rebar3e
rust1
rust2a
rust2b
rust3a
rust4a
rust4b
rust4c
rust5a
rust6a
rust6b
rust6c
rust6d
rust7a
rust7b
rust7c
rust7d
rust7e
rust8a
rust9a
west1
west2
west3a
west3b
west4a
west4b
west5b
west6a
west6b
west6c
west6d
west6e 
Item names:
Use one of the following entries with the /item code. 

weapon_fists
weapon_gausspistol
weapon_shotgun
weapon_minigun
weapon_beamgun
weapon_dml
weapon_spchemicalgun
ammo_gaussclip
ammo_buckshot
ammo_minigunclip
ammo_beamgunclip
ammo_dmlclip
ammo_chemical
item_healthkit
item_armor
player_armor
vehicle_tank 
     

Thanks to Revolution readers Vytautas Vaicys and overseer!