MAP17: The Black Towers (Hell Revealed)

MAP17: The Black Towers, designed by Yonatan Donner, is the seventeenth map of Hell Revealed.

Description
According to the Hell Revealed info pack:


 * A small city-like area with three black buildings, each of those containing one key you will need - but all are heavily guarded. Get the weapons in the right sequence and be careful not to fall victim to the traps that await you. You will only need two keys to finish the level, but I recommend getting all three for maximum fun.


 * Size: medium
 * Difficulty: medium

Speedrunning
See:
 * Hell Revealed at Compet-N
 * Hell Revealed at the Doom Speed Demos Archive