[Radek]

I. The warriors path.
When you look from the beginning of the fire way, you should see a closed portcullis at the end of the fire way. Also, the room with fires does not contain any levers. Do the following.
1. Look at the portcullis. If it is closed then enter the first fire carefully and retreat immediately when you get burnt. The portcullis is now open. If the portcullis was already open then skip this point.
2. Go forward directly. The portcullis will close and open and it will be open at the end of the way through the fires.

II. The wizards path.
When you look from the beginning of the fire way, you won't see any portcullis. The room with fires contains 2 levers in alcoves on its sides. You must not enter the central fire. The central fire heals instead of hurting but it also resets the fire trap.
1. Heal yourself completely. Go adound the wall to the first alcove. Flip the lever.
2. Heal yourself completely. Go back around the wall but instead of leaving the trap, continue around the wall to the second lever. Flip it.
3. Continue around the wall to the exit from the fire trap.