Avatar: The Last Airbender PC Cheats and Tips

It's just within the cavern if you had passed huge boulders that's blocking the way( after entering the entrance of the cavern you'll see it at the 3rd platform). You can only access that route if you defeat all the 4 Machines.
Note: if you die/pass out that route will be blocked again.
If you'd entered that route you'll be in an endless sort of... Platforms and the only way to go back is enteeing the bottom.

Go to the place where the lava is with Haru, use bending move to remove the bolder, come where you where you blocked the part with lava by going in the route to come again to the start of the place of the lava, use red keystone to open the door and take the box to the Elder.

If you are a high level of at least 21 then use aang's #3 move and dodge a lot

You just waterbend the water through the holes in the gate and put it in the first fountain thing and the gate will open and then do it again

Me:I just used "Sokka's "Exploding Bomb" to defeat it, And I found on the other sites that you can easily defeat the bosses with the "Exploding Bomb" they said (they just said) that except Chapters: 4 and 7 I'm not sure because I forgot it and the name of that website too.I hope this will work (SORRY I can't give you the other info's)