MAP16: Blood Keep (Doom 64)

MAP16: Blood Keep is the sixteenth map of Doom 64. The music for the level is the same as MAP02: The Terraformer. The level itself is exploring a huge keep and fighting large waves of monsters and tricky puzzles and finding the exit.

Walkthrough
Once you enter the exit room which has eight pillars, the room will go dark as all of the pillars ceilings lower, and Zombiemen, accompanied by Lost Souls, will spawn into the pillars moments later, and you must kill them to be able to reach the exit, which is blocked by a gate.

Make sure you stay in the middle of the room as the outer floor will lower and fill with lava after you killed all the enemies inside. If you're not careful, you will fall into the inescapable lava pit and die. The gate will open when all the Zombiemen and Lost Souls that have spawned in are killed, and you can now exit the level.

Secrets

 * 1) In the large library room with candles on the bookshelves, you've probably already noticed the obviously fake bookcase as well as the Plasma Rifle behind bars. The switch for the bars is a satanic-looking stone slab with two pillars on each side of it near the entrance to this room. Examine this stone slab, then quickly run over to the fake bookcase (the switch is timed) and examine it too. Step on top of it when it lowers, and ride it back up to get the plasma rifle.