Cheat mode 
Hold Start on controller two and power on the Playstation. 
Continue to hold the button until the main menu appears. Then at 
the main menu or while the game is paused, press 
L1, R1, R2, L1, Select, Start to enable cheat mode. Menu options 
for campaigns 2 and 3 will be unlocked, and the following codes 
may now be enabled:

Level skip 
While playing a game, press Select on controller two.

God mode 
While playing a game, press Triangle on controller two. 
Note: This also reveals all hidden objects.

Infinite power 
While playing a game, press Circle on controller two.

All items 
While playing a game, press X on controller two.

Super unit strength 
While playing a game, press Up on controller two.

Weak unit strength 
While playing a game, press Right on controller two.

Current research completed 
While playing a game, press Down on controller two.

Additional structures 
While playing a game, press R1 on controller two.

Additional units 
While playing a game, press R2 on controller two.