uammo [0 or 1]
For example:
uammo 0
or
uammo 1
Type fly 0 to turn it off
Type uammo 0 to turn it off
Type "remoteaccess 1" to enable remote access, then type "LOGIN developer" to enable cheat mode.
Enter "loadscenario("umc_spscenario1","[level name]")" using one of the following level names. When the new level is done loading the console window will disappear.
Click the "Next" icon to start the new level.
Level names:
bootcamp
cube
vertigo
brooklynsp
illegal
station
warehousesp
tucson
border
mansion
house
haunted
temple
gothic
space
plant
deadend
Type god 0 to turn it off
Type noclip 0 to turn it off