E2M9: Dissension (The Classic Episode)

The Classic Episode maps
This level occupies the map slot E2M9. For other maps which occupy this slot, see Category:E2M9.

E2M9: Dissension is the secret map of The Classic Episode. It was designed by Travers Dunne with Jan Van der Veken and uses the music track "Sign of Evil".

Completing this level takes the player to E2M6: Outpost 666.



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


Yellow key

Press the button to get out and head to the southern room where the security armor resides. Also, you can obtain shotgun and ammo there. The floor in the previous room should go down making access to the yellow key room for you. Jump down and use the eastern door. Press on the switch to lower the yellow key pedestal as long as the southern alcove containing monsters and switch to get out of this room.

Red Key

With the yellow key, leave the eastern room and head to the teleporter which deposits to the top of the room. By walking on the borders get towards the yellow door in the north eastern room of red torches. Open the door and head east around the closet to get inside the cage. Obtain the red key and backtrack to the starting point.

Blue Key

Drop down and use the door requiring the red key at the west. Use the teleporter on the nukage pool and press the skull button to open southern alcove. Head west and enter another nukage pool area. Press the skull button west to build up a staircase. Walk up the staircase. Open the door and head to the end of the corridor and use the lift. Head west. Note that the crushing ceiling will work. Press the button below the crusher. Enter the revealed teleporters to find yourself in the area with blue key. Grabbing the blue key will make many enemies teleport into this area. When killed them, teleport by red floor lamp and backtrack to the lift. Open the blue door and press the switch to end.

Other points of interestEdit


  1. In the room where there the yellow door is located, press use on the lone green torch. Go back downstairs and get the megaarmor before the pillar rises again. (sector 23)


Demo filesEdit

Areas / screenshotsEdit


Routes and tricksEdit

Current recordsEdit

The Compet-n records for the map are:

Run Time Player Date File Notes
UV speed 03:08 Radek Pecka 2002-11-25 cl29-308.zip
NM speed
UV max 05:45 Radek Pecka 2002-11-27 cl29-545.zip
UV -fast 09:07 Revved 2011-04-22 cf29-907.zip
UV -respawn
UV Tyson
UV pacifist

The data was last verified in its entirety on July 4, 2020.


Player spawnsEdit

This level contains four spawn points:

  1. facing south-east. (thing 117)
  2. facing south-west. (thing 118)
  3. facing north. (thing 119)
  4. facing north-east. (thing 120)


Map dataEdit

Things 255
Vertices 1119*
Linedefs 1129
Sidedefs 1605
Sectors 171
* The vertex count without the effect of node building is 956.


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

Technical informationEdit

Inspiration and developmentEdit


See alsoEdit


External linksEdit