Tricks:

Press CTRL+ALT+C and enter one of the following codes:

Delian -- Add 1000 coins to the treasure. 
Ambrosia -- win scenario. 
SoundFrags -- Unknown. 
Fireballs from Heaven -- Hit a certain peace of earth with a fireball. 
Bowvine and Arrows -- Towers shoot cows instead of arrows. 
Cheese Puff Dairy Workers -- Get "cheese" wear.