Cheat Codes
To enable cheats, find "config.cfg" file in the game install directory, open it with text editor (example: Notepad) and add the following line:

KEY "cheats" BOOL TRUE

Note: In order to generate the config.cfg file, you must run, and save your settings with the configuration tool. If this is not done, this file will not exist.

Save the changes, start the game and enter the following cheats in the console window (press [Shift]+[~] to bring it up):

godmode - will stop teh squad dying by the looks of it but they will still ned sickbay to heal for a while when back at base it seems.

quickvictory - will instanly make you win the mission how ever dont try it on missions like Area51 as you wont get any items or object back which are needed for research similarly on a shot down UFO , u get no UFO hull so no research for UFO access.

quicklose - similar to quickvictory but u lose the mission.

destroyobj - destroys objects under the cursor, like cars and other objects with red center circle and four arrow heads.

visibility - shows the current visible area by your squad LOS.

hitpoints - how much health out of 100% can see enemy health too. good when used with godmode so u can heal at the end with medic to try and reduce the number of people needing rest in the base at the end of it.

allplans - shows the path on enemies like your squat paths , enemies are grey
enemies - shows all enemies in area
heights - shows terrain level/height flat or sloping
ids - shows squad position number 1-7 (ids 0-6 ) works on enemies too.
think max of 7 for squad size ?

unitsashidden - units become see through like ghosts
quickabsolutevictory - win mission with items recovered

Unknown effect codes:

flare
firecheat
canparalyse
cancontrol
heapped
door
scenemode
morecellu
snow
area