Witchaven/Level 19

Head down the corridor you begin in until you reach a drop down, which you should take and turn right to reach a larger water room with a maze-ish central wall. Walk across the central wall to the door on the far end and head through the passage; a pentagram-marked door will open to your left, which you should investigate. Be very careful of spike traps here; either use the arrow bridge trick, or a flight spell. You will find the pentagram at the end of the passage, and taking it triggers a wall to close. Run back as soon as you've got the pentagram—if the passage closes all the way behind you, you cannot escape and will have to reload/restart the level. Once you've got the pentagram, you can explore for treasure, or head back to the exit, which is in a room in the northwest at the end of the starting corridor.

Bonus Areas

 * At the very end of the initial hallway, on the other side of the drop-down, is a door. There is a concealed spike pit immediately in front of this door, but if you fly across, you can find a few goodies including a Nuke scroll.
 * A magic sword can be found near the start, in the craggy area to the right.
 * A locked door which can only be opened by Open Doors due to lack of the matching key can be found in the maze-wall water area. It contains both types of amulets, a magic arrow spell and a quiver of arrows.
 * Also in the maze-wall area, opening a secret door on top of the white rocky platform will lead you to an area with evil eye patterns on the walls. A rising staircase leads to another quiver of arrows.
 * From the start, go left and then left again to find an area with a mutilated torso and a Mino Drake. Illusionary walls here conceal a bow, chainmail, quiver of arrows, treasure chests, Adamantine Ring and a (useless) brass key.