Frozen enemies 
Once an enemy is frozen they cannot be immediately damaged. Any physical 
attack will break the freeze without dealing any damage, but will leave the enemy 
stunned and vulnerable to the rest of any combo attack. 
 
Power combos 
Execute two or three quick attacks followed by a slow attack to execute a combo. 
To add more power to the combo you can hold down the slow attack button while 
you deal the first few quick attacks, effectively charging the final slow attack for 
massive damage. 
 
Replenish magic 
Crystals scattered in the various battle arenas protrude from the ground, and 
standing next to them will replenish your character's magic. The crystals vary in 
color, correlating to the four elements--they'll replenish anyone's magic, but 
characters with a matching element will replenish faster. 

Here's a tip: stand next to a magic replenishing crystal and you can continue to 
use your magic--either for attacks or defensive strategies--while your magic builds 
back up. Your magic won't run out until the power in the crystal is exhausted. 

Elephant Pool arena:
Win twenty team battles to unlock the Elephant Pool arena in versus mode. 

Metal Age arena:
Win one hundred arena battles to unlock the Metal Age arena in versus mode. 

Unlock Gods 
Unlock the God version of the associated Demi-God by finishing the Demi-God's 
campaign. Gods rank as Overlords and have the same abilities as Demi-Gods, 
however they fly (instead of walk), they have more life, and they cost 50% more 
to purchase in the Army Builder.