This level occupies the map slot E4M5. For other maps which occupy this slot, see Category:E4M5.

E4M5: Great Stair is the fifth level in The Ossuary episode of Heretic Shadow of the Serpent Riders.

E4M5 heretic

Map of E4M5


(To be written)


  1. After you get the blue key, go back to the ledge surrounding the lava pit with the small structure in the middle. Go to the northeast end where you found the wings. There you will find a small room with ammo, an urn, a tome, health, and a teleporter to a staircase landing near the blue door. This will teleport you past all the disciples that were revealed when you got the blue key; you can now go south and kill them without having them all come at you at once.

The following locations do not count as secrets:

  1. If you're having trouble getting started, look for a secret door at the south end of the small structure in the starting area.
  2. Northwest of the yellow door is a red and blue banner. Hit the space bar on it to lower a lift to a small area with goodies.


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