[Radek]

The warrior path (without levers) can be passed easily:

1. Check the grate at the end of the room of fires. It could be closed.
2. Enter the first fire and when it starts to burn you, retreat immediately.
3. Check the grate at the end of the room of fires. It should be open now.
4. Go (or run) straight forward. The grate will be open when you reach it.

The wizard path (with levers) cannot be swindled this way. Either use force (a chest) or go around the walls to the first lever, click, heal, go back around the walls and continue to the second lever, click, heal, go forward around the walls to the grate. It will be open when you reach it. During the trip, you must avoid the central fire. The fire heals but it also resets the trap so that you have to repeat the trip from scratch. The trip in the room of fires will cost each of your characters about 30 HP so that plan accordingly.