Avatar : The Last Airbender - Defeating the fire machine

Avatar : The Last Airbender - Defeating the fire machine
Enter these codes at the "Code Entry" menu... it's found under "Extras"

1-Hit Dishonor - 54641
Character Concept Gallery - 97831
Double Damage - 34743
Neverending Stealth - 53467
Unlimited Chi - 24463
Unlimited Copper - 23637
Unlimited Health - 94677
Unlock all Treasure Maps - 37437

Defeating the fire machine:
This is the machine you must fight in order to find Katara. Dodge the fire bending. Try running left to right, then right to left. Continue this until you see a flashing light near it, then attack it. Hit it with Aang. You may use a Chi attack but just a plain attack should work just as well, however it takes time. You will have Saka Katara's brother fighting with you to do double damage. Once it has around a quarter of its HP gone, the machine will start throwing fire around. Keep a safe distance from this attack. It causes no real threat to your or your partner as long as you stay as far away as possible.

Easy experience:
Whenever you are in battle you can go back later to get more experience.