MAP04 (Brotherhood of Ruin)

MAP04 is the fourth level of Brotherhood of Ruin. It was designed by Kristian Aro and uses the music track "".

Walkthrough

 * Letters in italics refer to marked spots on the map. Sector numbers in boldface are secrets which count toward the end-of-level tally.

Secrets
1. In the first courtyard you come across, go left of the staircase and in between the two boxes of rockets, press the wall and you will access a rocket launcher and a megaarmor. (sector 374)

2. (sector 208) This secret sector can only be legitimately accessed in a deathmatch game as there is a deathmatch start there. This secret holds a megasphere, a cell charge pack, and a BFG 9000, but they only appear during a deathmatch game. They do not appear in a single player or a co-op game and the secret sector itself is not accessible except by using the no clipping cheat.

3. When you press the switch in the northeastern portion of the map and head back south, you will notice two alcoves containing hell knights have opened up. Go to the eastern alcove, and press on the back wall to reveal a BFG 9000. (sector 364)

4. In the room with the red key, there is a niche with a chaingunner and a different textured wall which is a lift. Take this lift up and hit the switch there to open up a small passage to the south with a shotgun guy and a megasphere. (sector 413) This sector also contains an elevator on the south wall that leads back to the area with the pillars above the lava.

5. On your way to the exit, in the northern hallway there are several Mayan frescos. The rightmost one on the northern wall is bloodied in appearance. Press it, then run east and south to a secret with a cell charge pack and a medikit. (sector 628) Get there quickly before it rises.