Welcome to a No Rest For The Wicked secret!
There is a hidden way to access the burning area in Namless Pass (No Rest For The Wicked), long before the Faith and Flame main story line quest.
Works on No Rest For The Wicked Together.
Full video guide:
From here, you can unlock the bridge connecting the elevators area and also the stairs above the cave exit in Nameless Pass.

Alternatively, here’s the step by step guide:
1) Find this bridge above the area

2) Jump on top of the tent below

3) Exit the game exactly when you reach the ground
Timing is important: you must quit to the main menu at the exact same time you are touching the ground.
Just make sure to change the menu to Quit before jumping.
And use Esc – Space – Space (on PC).

If you get this right, you will hear the crunch of the fall as you quit the game.
When you log back in, the game puts you on top of the tent.

Congratulations! You’ve just bypassed fall damage entirely.
If you quit too early during the fall, the game puts you back on the bridge.
If you quit too late, you die.
4) Explore the area!
You now have access to the entire area! All the puzzles are there, also the resources.

You can now drop the bridge taking you to the elevators in Nameless Pass.

You can drop the stairs above the cavern exit.

And you can also activate the Whisper in the area.
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