This level occupies the map slot E1M5. For other maps which occupy this slot, see Category:E1M5.
Massacre on Callisto
The Killing Fields of Io
Hell's Gate - The Red Spot of Jupiter

E1M5: Weapons Research Center is the fifth map of Massacre on Callisto, which is the first episode of The Lost Episodes of Doom. It was designed by Christen David "Chris" Klie and previously released as a map in CHRIS_E1.WAD and later in CHRISK.WAD. According to the designer's notes in the book, it was released as CHRISK15.WAD in the first place.


Lost episodes of doom e1m5

Map of E1M5

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


From the start go through the door in front of you. There is an area with some teleporters and 3 other doors. Take the left and grab the Yellow skull key and head over to the door on the opposite side. There jump down the blood pool, and take care for it hurts, so go to the concrete floor. From there you can see two yellow doors, one on the left side with an exit sign, and another on the right. Take the right first and grab the Radiation suit. Then go to the concrete floor in the east and take the teleporter on the south-eastern bloodpool. This leads you to the Blue keycard. Go back to the area with the two yellow doors, and take the left one, with the exit sign this time. Enter the room, lift the blue door an exit the level.

Other points of interest

Lost episodes of doom e1m5 teleporter

Teleporter riddle E1M5

On the area with the teleporters, take first the one in the south-west, then the southern, then the western and finally the north-eastern, as shown on the detail mapshot, to grab all the stuff in that area.

In the area, where you grab the Yellow skull key is an BFG 9000 inside an teleporter. To get it, you have to go around the teleporter an got through it from the side, whith the nukage pool.


All five secrets are reachable at the starting room. The first is the platform on the left side, you can lower it, to get the Red keycard. The second and the third secrets are located behind the red door. This room is a little labyrinth with various switches. Secret number four is the right platform in the starting area, giving you a Light amplification visor. Behind the wall with the computer terminals on this platform is secret number five, a oval room with the Computer map inside.

Areas / screenshots