Cheat Codes:

If you need some credits, try loading a savegame file from a non tactical mission in a hex-editor, go to offset 33D40, and change the entry to FF FF FF FF. Now you should have a little over 16.5 millioner credits.

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Cityscape cheat mode (beta version):

Hold [Alt] and type ufo cheat at the main interface. The message bar will confirm that cheat mode has been enabled. Enter one of the following codes to activate the corresponding cheat function.

Effect / Code 

Cancel cheat mode [Alt] + [Esc] 

One more of all equipment [Alt] + [Keypad Plus] 

Flip dimension [Alt] + 0, 1, 2, 3, 4, 5, 6, 7 

Toggle auto-save [Alt] + A 

Force Base mission [Alt] + B 

Force UFOs to crash [Alt] + C 

Toggle dimension map [Alt] + D 

Toggle build base facilities [Alt] + F 

Test alien dimension [Alt] + G 

$100,000 [Alt] + M 

Show number of aliens in buildings [Alt] + N 

Toggle instant project finish [Alt] + P 

Toggle allow all manufacture [Alt] + Q 

Toggle allow all research [Alt] + R 

Force Overspawn [Alt] + S 

Force apocalypse (terror) mission [Alt] + T 

Toggle view all UFOpaedia [Alt] + V 

One of each vehicle [Alt] + X 

Show people tube connections [Alt] + Z 

Tactical cheat mode (beta version):

Hold [Alt] and type tac cheat. The message bar will confirm that cheat mode has been enabled. Enter one of the following codes to activate the corresponding cheat function. 

Effect / Code 

Cancel cheat mode [Alt] + [Esc] 

Toggle training [Alt] + T 

Toggle hidden terrain [Alt] + H 

Toggle hidden units [Alt] + V 

Kill hostile units [Alt] + K 

Toggle invincibility [Alt] + I 

Toggle weightlessness [Alt] + W 

Increase music intensity [Alt] + F 

Decrease music intensity [Alt] + G 

View FMV sequences [Alt] + U 

Equip Me 

Hold [Alt] and type ufo cheat at the main interface. The message bar will confirm that cheat mode has been enabled. Then to get one more of all equipment hit [Alt] + [Keypad Plus]. 

$20,681,571 Funds 

Load a non-tactical mission game file in a hex editor, such as Hex Workshop or EditPad Pro.

At offset 33D40, type in 63 93 3B 01 25 C3 00 00 this will give you 20,681,571 credits.

Whenever you get low on funds, just bring up your lastest savegame file and re-enter it again.

Cheat codes only available in the "DEBUG" version.

Cause Fatal Error -- ALT + E 
Do "TEST" routine -- ALT + SPACE 
Activating cheat mode for X-COM Apocalypse Tactical.

Hold down ALT and type "TAC CHEAT" if you mistype it or it doesn't work, hold down ALT and press any key other than "T", then try again. You will get visual confirmation that the cheat mode has been activated on the message bar.

Cheat codes for X-COM Apocalypse Tactical:

Cancel cheat mode -- ALT + ESCAPE 
Training mode on/off -- ALT + T 
Hidden terrain on/off -- ALT + H 
Hidden units on/off -- ALT + V 
Kill all hostile units -- ALT + K 
Invincibility on/off -- ALT + I 
Weightlessness on/off -- ALT + W 
Increase musical intensity -- ALT + F 
Decrease musical intensity -- ALT + G 
Animation viewer -- ALT + U (you must have unit selected + on screen, ESCAPE exits, other keys given on screen). 
Cheat codes only available in the "DEBUG" version.

Show frame counter -- ALT + R 
Do "TEST" routine -- ALT + SPACE