The FlameThrower?

I think this is the flamethrower part....

Im starting from the save place (the light)

Pull the lever and go up.

You will fight a few enemies. Turn right and open the chest.

Turn left so u go back to the middle.
If u try to open the door the guy will throw fire.

So go where the lever is (to go down)
Dont go down, go left and fight enemies.

Open the chest.

Open the lever when you go further.

Now go down towards the save (light)

Go backwards. In the water open the chest.

Go further backwards and go up the stairs.

Go in further and fight LOTS OF ENEMIES.

(To get pass the enemies use the efreet level 2 power)

After u fight the enemies go forward and there will be an opened gate.

Go through it!

Kill that flamethrower, use the lever to open the gate

Now open that big gate.

Its all yours from there! Hope I Helped