Witchaven II: Blood Vengeance/Level 4: Eye of Midian

From the start you can see into the ending area, but you won't be able to get there right away. Head west first and go into the circular structure via the door to get the brass key. Then head north to find the pentagram, pulling the chains in the big cross room to open its chamber. The pad it's sitting on will close off the way back, but don't panic; stepping on this floor plate again will open the way back up.

From there, head back to the start, go east and pull the chain to open the room with three reflecting pools and a bunch of imps. Pull the chain in this room to open some passages. Take the northwestern passage that opens, near the end of which you'll find a swinging door that requires the brass key. Carefully open the door to enter the final area. There's a big welcoming party that you might wish to freeze or nuke.

Tips and secrets:


 * The stained glass maze and the northeast section of the map are optional, but contain some nice treasures. The northeasternmost point, in particular, contains an ornate horn, while the maze has an armory with several weapons.
 * The room east of the start with the imps and reflective water contains two pull chains. Beware that pulling the second one will close off the passages opened by the first, locking you out if you don't have an Open Doors scroll. This can make the map unwinnable!
 * Be careful of the indented floor containing a Shadow Amulet in the stained glass maze. It's a trap with death spikes underneath.

Notes:
 * There doesn't seem to be a purpose for the black key in this level.