Unlimited defense
Choose the Life Warrior, and when you get to the playing field, double click on him and move The Peacemaker artifact from his hand to his backpack. His defense will keep going up. Repeat this to build the defense indefinitely. This also can be done with the same artifact obtained when the life great temple is conquered with the Life Mage Lord. Note: This trick does not work with v2.02.

Cheat Codes
While playing a game, press [Ctrl] + \ to display the cheat prompt. Then, enter one of the following case-sensitive codes to activate the corresponding cheat function. Note: The codes are available only in v2.0 or greater in the game and may not be enabled in multi-player mode.