E1M4: Substation 537A (2002 A Doom Odyssey)

E1M4: Substation 537A is the fourth map in the Deep into the Code episode of 2002 A Doom Odyssey. It was designed by Kristian Aro (Nebula) and uses the music track "". In the 10th anniversary edition some geometry changes were applied but the things population remained the same.

Secrets

 * 1) Inside the room where the yellow key is, there are two 'POISON' signs at the top of the steps near the door. Use the one on the left to find a rocket launcher. (sector 86)
 * 2) Shoot the barrels in the room past the yellow door and use the switch to lower the bars, then go right and down to the next door. In the next hall, a closet opens to the southeast as you go. Press on the plain beige wall to find health bonuses, a backpack, and a switch. This switch will lower the soul sphere in the hub. (sector 117)

Current records
The records for the map at the Doom Speed Demo Archive are:

The data was last verified in its entirety on April 3, 2022.

Player spawns
This level contains four spawn points:
 * 1) facing east. (thing 241)
 * 2) facing south. (thing 244)
 * 3) facing east. (thing 247)
 * 4) facing east. (thing 250)

Map data
Original ed.:

10th ann.ed.:

Things
This level contains the following numbers of things per skill level: