Press Ctrl + E together or Ctrl + W together and you will hear a low double tone confirming that Cheat mode has been enabled. Then enter any of the following codes to unlock the corresponding effect.

Construction Completed on ALL Bases:
Quickbase

Activate Full Research:
Knowitall

Invincibility:
Canttouchthis

More Money:
Payday

No Aliens:
Joyride

Unlock Corporate Recon Side Mission:
Smrecon

Unlock Pirate Base Rescue Side Mission:
Smrescue

Unlock Rogue Freighter Side Mission:
Smrogue

Unlock Arms Dealer Side Mission:
Smarms

Unlock Nova Bomb Side Mission:
Smnova

Unlimited Flight Range Time:
Fillerup


Battle Cheats Codes
Press Ctrl + E together and you will hear a low double tone confirming cheat mode has been enabled. Then type 'battlecheats' and you will then be able to enter the following codes in battle to activate the corresponding effect.

Destroy Target:
Alt + ` (on an English Keyboard)

Destroy Target:
Alt + # (on an American Keyboard)

Cycle Weapons:
Alt + X

Suicide
Alt + O