Press [Ctrl][Shift][C] in the game, a sinal should be heart. Now type in

 gold                       +1.000 Gold
 mana                       +1.000 Mana
 explore                    Reveal map
 fog                        Fog of War OFF
 research                   All Spells
 win                        Win scenario
 freemove                   Free movement of units
 towns                      Show all towns
 lose                       Lose scenario
 spells                     Spells for free
 instantprod                Complete current production
 instantres                 Complete current research
 ai                         AI for own character ON/OFF
 upgradehero                Hero +1 level
 cityspy                    Spay on enemy towns
 emergehero                 Summon Hero Spell