Start game, go to the console (hit tilde ~) and type
"LOGIN developer" without the quotes to enable cheat codes.
Then use the following codes:
NOTE: If you have trouble logging in as developer, type "remoteaccess 1"
in the console to first enable remote access. You should then be able to
login as developer and activate the cheats.
FLY 0/1 - Fly Mode
GOD 0/1 - God Mode
NOCLIP 0/1 - No Clipping
UAMMO 0/1 - Unlimited Ammo
GIVE_ALL - All Weapons & Ammo
ENABLE COUNTER - Show Framerate
ENABLE CROSSHAIR - Show Crosshair
ROTATE CROSSHAIR - Select Next Crosshair
LOADSCENARIO("UMC_SPSCENARIO1","Levelname") - Load Level "Levelname"
NOTE 1: This must be done in the following way or the level will not be playable:
1) Start a new single-player game.
2) After the Bootcamp level loads, do not click the "Next" button.
3) Call up the console and enter the above LOGIN and LOADSCENARIO cheats.
4) When the loading is finished, the console will disappear.
5) Click the "next" button and the level will start.
NOTE 2: Another way to start at any level is to edit the file UMCGAME.LGS
in the GORERULES folder under the game install folder. Be sure to backup
this file first. Simply delete all of the mission desciptions before the
one at which you wish to start and save the file. Each description will
look similar to this:
There is no need to renumber the remaining mission descriptions.
Now run the game and start a new single-player game. The game will
load the first mission description it finds in the edited file.