You need to find the correct way through the fires. There are two such "fire mazes" in the Crypt.
1. The warrior's path. If you haven't found any levers in the room with fires then you are at the varrior's path. The quickest way through:
a) When you come to the maze then look at the grate at its end. You should see it and it should be closed. If it isn't then go to c)
b) If the grate is closed then enter the fisrt fire and retreat immediately. Look at the grate. It sould be open now.
c) Go straight through the maze to the grate. The grate will open and close and it will be open when you reach it.
Trickery? Yes
2. The wizard's path. If you have seen levers in the room with fires then you are on the wizard's path. No tricks are known to me, you must follow the correct way.
a) Enter the maze and go
around the walls to the first lever. You must avoid the central fire, which heals but also resets the maze. Click the lever.
b) Heal yourself, go back around the walls, and continue around the walls to the second lever. Click it. (Note: do not leave the maze during your way to the second lever.)
c) Continue around the walls to the grate. It sould be open when you reach it.