There are only two levels, but the character is so slow it's boring, even so, game over. Strategy? You line up all your mage troops, attack with a fireball, and return to the front of the mage line, doing the same with each of the enemies. It was the easiest way to take them all out. By the way, when they ambush you, the best thing to do is simply run away; after a while they disappear, you can continue.
