Spear Survival -

There are Firenation Soldiers With Swords, they need about 3-4 hits by Ang to be defeated, archers need 5-9, and spearmen need anywhere from 10-19 hits to be killed, the spearmen have a special charge move, when ang has his Airblast Ability, shoot it at the Spearmen

First, it will knock him out so you dont get hurt, then use your airstike on them, make sure to stay on him and strike him until he dies. (you should usually take out the weakest guys first, then the next, and so on, if you have multiple people on you, make sure to attack them all at once, circular motions work good)

Open Secret Levels - At the main menu password screen, enter the following:

Row 1: Aang, Momo, Momo
Row 2: Katara, Sokka, Sokka
Row 3: Iroh, Sokka, Iroh

This gives an automatic A-ranking on the first 8 levels, allowing the next five to be played